Regretting sex.

So I’m kind of young but I think it’s okay that I have sex. I’ve had sex 13 times now but this last time was the first time for a couple months. I stopped having sex for awhile because I was having sex a lot and I was so worried about getting pregnant (I’m not on birth control and a psychic told me I’d get pregnant😂) yesterday I had sex tho. I’m still not on Bc and now I’m all worried again. We used a condom and he pulled out way before he came. I told him in advance I didn’t want to have sex but I did bring condoms. I did put the condom on him and I was on top. It is all my fault that I had sex and I’m regretting it terribly. Any suggestions on how to stop feeling so shitty about it?