Third and last part of Sheldon and Amy changing bodies. I hope you like it!

When they entered Amy's laboratory they saw that there were several students there. Hearing them enter, all the students turned around and one of them approached.

-Dr. Fowler, it's good that you are already here- the young woman approached to try to kiss her on the cheek but Sheldon backed away quickly - Is everything alright?

-Yes, everything is fine Ana- Amy said. Ana looked at him surprised since she didn't imagine that Dr. Cooper knew who she was. -Could you leave us alone with your partner for a moment- Amy asked. All of the students looked over to where Sheldon was who just nodded so the students left the lab.

-Dr. Fowler, what's going on? -She asked with her gaze fixed on who she thought Amy was.- Did I do something wrong?

-You didn't do anything wrong- replied Penny- Dr. Fowler is ... sick and we need your help for the conference.

Between the three of them explained to the young woman about Amy's alleged illness and that Sheldon would be in charge of giving the conference instead of her and that she should help them to inform the people who came to hear the conference.

-Are you sure about this?- she ask looking at her boss who nodded. Ana saw her take Dr. Cooper's hand and squeeze it tenderly. -Very well- she said something calmer. The way Dr. Fowler had looked at Dr. Cooper made her realize that she really believed he could give the lecture- I'll let my partners know.

-Do you need anything?- Penny asked after Ana left them alone.

-No, I'm…- she inhale deeply-I'm fine.

-You will do it great- said Sheldon, who had not yet released her hand.

-Thank you- she smiled at him slightly-We should go to the auditorium at once.

The four left the laboratory and went to the auditorium where everything was already organized. Leonard and Penny sat in the front row and agreed that even though "Amy" couldn't speak she should be sitting on the stand next to Sheldon.

Little by little, the invited scientists arrived until the auditorium was almost full. Amy peeked around a corner to see how many people there were.

-Are you okay?- Sheldon asked when he saw her close her eyes.

-Yes, it's just that ... there are more people than I thought- Sheldon also looked out to see how many people were.

-It's a lot of people- saw that Amy was getting more nervous- But ... that's good. It means that scientists really care what you have to say and it shouldn't surprise you. -Sheldon hugged her to try to reassure her.- You are the best neurobiologist I know.

-I am the only neurobiologist you know- she said when they separated.

-Well, yes ... but you're still the best- she smiled at him- And the proof is all the people who will be happy to hear you talk.

-But ... -she look at the ground- They won't listen to me, they will listen to you.

-Maybe you look and talk like me- Sheldon took her chin so that she looked at him -But all you will say is completely ... you.

-But they don't know.

-Then make sure everyone knows that although "Sheldon" is the lecturer, all the hard work was done by Amy.

- You don't think that all the people who know you will thought that it is rare that Sheldon Cooper praises the work of someone else than himself?

-Maybe- Sheldon acknowledged- Or maybe they realize how much Sheldon loves Amy and that he would do anything for her.

-You what?!- Amy yelled, opening her eyes completely surprised.

-Dr. Cooper, is everything alright? - Ana asked approaching them.

-Yes, I ... I'm fine- she said without taking her eyes off Sheldon.

-All is ready to start.

-Just ... just give me a second- Ana nodded and stepped out onto the stand to introduce Sheldon and Amy. -Do you love me?

-Yes.

Amy opened her mouth to say something but at that moment she hear Ana's voice saying their names and people applauding. It was time.

"Amy" waved at the audience and then sat in one of the chairs while "Sheldon" introduced himself to everyone.

Almost two hours later the conference should have ended but the scientists there were still asking questions. Sometimes "Sheldon" approached "Amy" who quickly whispered the answer to questions that "he didn't know how to answer".

In the end "Sheldon" had to apologize and finish the conference because other people were going to occupy that auditorium for another conferences. Many of the people there started to leave the auditorium but others waited for Sheldon and Amy to come down from the podium to comment on the conference. Everyone who approached them seemed very interested that when "Amy" recovered, she would give them a chance to talk more about it, to which "Amy" nodded with a smile.

-You did very well, Ames- Penny said with a smile as they left the auditorium.

-Did you understand anything of what Amy said?- Sheldon asked, arching his eyebrow.

-Well, no. But all those scientists seemed really interested so…-she shrugged but Amy smiled.

-Thanks bestie.

-Penny is right -said Sheldon- You did very well and I ...

-Aww little Shelly is speechless before his wonderful girlfriend- Sheldon glared at Penny and a second later he looked at Amy and his eyes changed completely.

-I'm very proud of you.

-Sheldon ... Are you serious?

-Yes- Penny smiled- If you saw the way he looked at you during the whole conference ... if he didn't know Sheldon I would think that when you two reached the apartment he would have his way with you.

-That's not ... I don't ... -Sheldon blushed- I never ...

-Relax Sheldon-Amy put her hand on his arm- Penny was joking.

-I wasn't- Penny said amused to see Sheldon frown-Now what do we do?

-I think the best thing would be for us to go to Sheldon's apartment- Amy suggested- Everything went well and nobody suspected, but we shouldn't take the risk.

-You are right- Leonard agreed- And I will also let the boys know that the plan to play dungeons and dragons is canceled.

-You don't have to.- They all looked at Amy. -After we all played that time, Sheldon and I kept playing and I'm pretty good.

-Not that I doubt it ... but I don't think Sheldon can be watching us play without saying anything.

-Oh okay.

-But we can play- Sheldon said excited at the idea.

-Don't count on me- replied Penny, taking the lock off her car.

They had just arrived at the apartment when Leonard's cell phone started ringing.

-It's Howard.

-Better answer before he shows up here- Sheldon hastened. Leonard nodded and walked to the kitchen so he could talk to Howard since Penny's cell phone started ringing too.

-It's Bernadette- Penny commented confused.- Did we have something planned for today?- Amy shook her head.

-Let's sit down- Sheldon whispered as he motioned for her to go to the couch. Amy nodded-What are you doing?- He asked, seeing that his girlfriend had sat in his spot.

-This is my spot- she replied with a smile.

-Very funny -said Sheldon hoping that at any moment she would get up- Well?

-I'm not going to move.

-But ... that's my spot.

-It is not. Today you are Amy and your place ... -she patted the space next to her- is this -Sheldon turned to seek help from his friends but they were still on the cell phone.

-Well-he reluctantly accept. He sat down in the place normally occupied by Amy and grimaced- I don't like it- he complained crossing his arms.

-Well, I think you look very nice there -Amy gave him a kiss on the cheek- We should change places more often.

-Just because I love you doesn't mean I'm going to let you sit in my spot again.

-You said it again- said Amy, opening her eyes.

-Well yes, I love you-Amy was going to say something but at that moment her friends approached.

-It was difficult but I could convince Howard not to come- Leonard commented.

-Are they looking forward to playing D&D?- Asked Amy.

-We didn't even talk about it.

-So?

-The boys heard about your conference and wanted to come to know how you convinced "Sheldon" to give the conference in your place -he added- And they are also worried about your illness.

-Oh ...

-Bernadette also wanted to see you. But I told her that you needed to rest.

-Thank you.

-But don't be surprised if they show up here tomorrow though.

After that Amy commented that she was hungry so they ordered pizza for the 4 of them. When they finished eating, Sheldon suggested playing D&D but Penny refused.

-So what can we do?- Sheldon asked.

-Do what you want- Penny yawned- I am very tired and I will go to sleep for a while.

-I'll go with you- said Leonard, coming out behind her.

- "Go to sleep" Does it mean that she will have coitus with Leonard?

-Possibly.

-Interesting- Sheldon looked at the time on Amy's watch- I did not imagine that coitus could happen at this time.

-Sex can happen at any time, Sheldon- Amy said with a smile at the innocence of her boyfriend- Although it surprises me- he looked at her confused- you have been living near Penny for years, why didn't you notice it before?

-Normally at this time I'm still in the university.

-Good point-she finished cleaning the table and looked at the white board behind her- What is this?

-A couple of days ago you mentioned how a little asymmetry is good -Amy nodded- I had an idea about that- he stood next to her while explaining about his idea and the equations he was working on.

-So instead of supersymmetry would it be super asymmetry?- Asked Amy, not sure if she understood his idea correctly.

-That's it- Sheldon jumped excited and grabbed a marker. They were working together for the next few hours and were so focused that none of them had noticed the time. It was until Sheldon saw Amy yawn that he looked at the clock- It's almost 11.

-I think we should go to sleep-Sheldon nodded so Amy started walking to Leonard's room but stopped when she saw that Sheldon had not moved- What is wrong?

-I… I need to take a shower.

-Well, do it- Sheldon pointed to her body -Oh ... OH!- She exclaimed realizing that if Sheldon took a bath it meant that he would see her body completely naked.

-I don't…want… I don't want to touch you without your consent, but I really need to take a shower.

-It's okay, Sheldon. You can take a shower- he nodded gratefully.

-You should also do the same. I don't want my body to be dirty when I return.

-How about if we... we shower together- Amy suggested and she could see the doubt in Sheldon's eyes- Anyway you will see my naked body and I will see yours.

-You are right, but ...

-Nothing has to happen -she assure him- We will only bathe.

.

-How do you want to do this?- Sheldon asked when they were in the bathroom-Do I take your clothes? Or do you do it?

-Well ...- She felt quite nervous and did not know why. It was not the first time that Sheldon had seen her naked - we can help each other.

Sheldon nodded. A second later he began to unbutton the shirt as she lowered the zipper on her dress. When they were both naked they got into the bathtub and started washing their hair which was easy, but when they got to the part about washing their bodies, Sheldon hesitated to touch Amy's body, so she started washing her own breasts. Sheldon couldn't help but jump a little at the feel of Amy's hands.

-Sorry- she apologized.

-It's not that, it's just that… I didn't expect it to feel that way.

-What do you me?

-It's ... pleasant -he admitted blushing- Did you ... did you ever feel it?

-No. No one has ever touched me like that- she reminded him.

-Oh ... it's true- they looked at each other for a few seconds- Maybe... we should do this again when we are in our bodies.

-Are you serious?- Asked Amy totally surprised.

-If you want.

-I… I would like to.

-Great- he smiled at her- Now we should finish bathing later.

.

-Amy- she was about to enter Leonard's room but stopped when he hear Sheldon calling her.

-Would you like to sleep with me?

-Really? - She walked to her boyfriend's room- That's a big step.

-We just saw each other naked a few minutes ago- he shrugged- But I'll understand if you're not ready.

-No. I am- Sheldon nodded as he watched her enter her room. They lay on the bed and he kissed her lips before settling down to sleep- Sheldon- she called him and he turned to look at her- I love you too.

-Quoting Han Solo: I know-she smiled at him and then they both fell asleep almost immediately.

When Sheldon opened his eyes the next morning he saw that while they were sleeping he had turned around and had an arm around Amy's waist. He was wondering if he should remove his arm when she turned around and looked at him. She opened her eyes completely surprised and in that moment Sheldon realized ... they had returned to their bodies.

-Did we make it?- She asked.

-We make it- he confirmed rising from the bed.

-We make it!- She repeated almost screaming as she ran to hug her boyfriend.

-This feels good- he said when he put his head on hers.

-Yes-Amy smiled happily upon hearing Sheldon's heartbeat. A few seconds later she separated from him.- I think I should start to collect my things.

-Why?

-We are back in our bodies. I should go back to my apartment.

-You're not going anywhere- Sheldon said- In case you don't remember yesterday we made a baby and ...

-What baby?

-A baby called supersymmetry.

-Oh ...

-So hurry beautiful thing- Sheldon smiled- We have a lot of work to do-he kissed Amy on the lips and left the room. Maybe when he and Amy won the Nobel Prize he would thank Penny and the psychic for what they had done, but in the meantime ... their baby was waiting for them.