I'm 19 and have had sex with 12 guys

I started having sex when I was 15 with a boyfriend of 3 years. But we ended up breaking up and since then I've kind of just been going with it. It's not like I'm having sex with every guy I see. I do pick and choose who and when I'd like to. It's always on my terms. But growing up I was taught having sex outside of marriage was 'evil'. So I have a hard time with the two extreme sides. I'm just wondering if anyone else feels the same??