I think you should calm down, let your mom believe whatever she wants, go get a pregnancy test, tell her you can do it in front of her, show her is negative, and tell her to don't ever doubt you again. Don't let your mom's words affect you. Only you know who you are what you do with your body and yourself. And whatever you choose to do, it will always be the right choice because you made that choice. For better or for worse.