Its normal to be nervous before camp. Everybody hopes that theyll have a good bunk, good counselors, and that theyll make a good impression and be accepted by everybody. But It sounds like there’s something more going on thats making you additionally nervous.
I dont know you and I dont know your situation. But I would tell you the following: dont be haunted by past mistakes. Forget about what you think people think of you. This year is a chance for a new start. Go with your gut and do what you feel is right. Dont try to act like a different person in order to be accepted. Act genuine and youll see that itll all turn out ok.
Loads of luck and have a great time in camp!