I had to tell my mom I've had sex...

I came home on Monday night for being out with my boyfriend for about 8 hours. Mind you, I'm 19 my boyfriend is 18 and we are in college. I was having my wisdom teeth pulled the next day and previously when we went to the doctors and they asked me if I was on any medication I said no because I didn't want my mom to know....my mom saw the birth control pills and asked me if I was taking them because she wanted to know since I was going under. So I ended up telling my mom I'm on the pill then we were fighting for a while and then she kept asking if I've had sex and I finally just told her yes. Then she started getting mad and upset saying how she can't believe I would risk my future like that and that she thought I was smarter than to do that and saying 18-19 is way too young to be having sex. Then I started crying then she started saying how she doesn't think my boyfriend is the one for me and that made me even more upset :(. But then later that night she came into my room when I was sobbing and said she was sorry and that she understands I'm in love and he's my boyfriend and I'm on birth control. But she said she is also upset because this isn't what she wants for me and that it's a sin and not Gods plan, which I agree with. And then my boyfriend came over and saw me yesterday after I got my wisdom teeth out and my mom was a little ehhh with him. Once I told her we've had sex she said she's lost all respect for my boyfriend but she still likes him? But yesterday she acted and looked differently towards him. And now my mom is upset saying she thinks she could've prevented it by not letting me spend so much time with my boyfriend but I told her it would've happened anyways...I still live at home and have to follow their rules and I just don't want my mom to be all strict with me hanging out with my boyfriend now just because I was honest... how do I make sure my mom won't get all strict with me? And will she forget about it eventually and not think of me differently ? The conversation ended with her saying she loves me and is sorry and understands but she wants me to know it's wrong and a sin. So how do I make her not think of me differently just because I had sex ?