Saturotry rape and blackmail, help?

I really just want to put this behind me I've had enough of this. So I have this tutor he's 18 turning 19 and I just turned 16. He said to get his trust back I'd have to send a full nude shot with my face in it. I did it because I thought he loved me and I would do anything for his trust back. He sent me one too. He then said if wa his insurance against me telling anyone. What makes me think he's done this to other girls is that he said when he tutors he likes so reward his people with surprises he said he wanted to ride me and do other sexual things. I feel bad because I played along and some times was the only one saying it. Then last wednesay he came over and we had sex. He didnt want to use protection but I made him then the condos broke. I hope I don't get pregnant or anything. And btw he knows I was in an extreme fragile state because I just got back from rehab for my self harm and eating disorder. He manipulated me and took advantage of me in my fragile state. Should I tell my parents, could I get in trouble ? Should they press charges ??