Sweetheart, first of all, you have nothing to be ashamed of........nothing. Now, you need to talk to your sports class teacher and tell her what is happening. If she knows you are in counseling she will understand the problem. If you are not strong enough to do that then maybe one of your parents can do it for you. You shouldn't have to cope, because of your mental health issue you should be given something else that does not bother you that way.