Hio!

Well, I have to go for physical therapy today for my first time. I am a bit nervous and I am really scared because my step dad told me it will hurt but I am not sure if he was being sarcastic. I am scared though because I was thinking about it today, and I am going for my neck and spine... I dont know if this is stupid to ask but will I be able to keep my shirt on?? I really freak out when I have to take my shirt off, I went to the doctor and i seriously cried when I had to so she could ultrasound my heart. What do you guys think?