sex hurts so much😪

I've tried using lube, and different positions but it doesn't really help.. now it's starting to burn. I can't go to the doctors bc my mother won't let me go for that reason (doesn't know I'm having sexual intercourse). I don't know what's wrong with me.. I feel so useless. Even masturbation hurts. I've never felt pleasure with masturbation even at 13 (now 16). Although I know I want to have sex and enjoy it since I get aroused..