What if I regret having sex?

I understand what you are saying.. I did the same thing and I wasn’t ready at all. I only did it because I was the last virgin out of my friends and I decided I wanted to lose it and I did. It was pathetic and probably the stupidest thing I have ever done of course I didn’t lose it at 13 but I can understand what you going through. Honestly in my opinion it sounds like you weren’t ready and a lot of people aren’t. You got pressured in to doing something you didn’t want to do to feel liked and thats understandable. You made a mistake and it’s good you can admit it and its okay to regret it… all you can do now is move on and find somebody you really love to share something like that with. It’s going to suck a lot at first and you may think about it tons but really you’ll get over it in awhile. Anyways good luck!