Is it normal that i like sex alot ?

I'm 18yrs old and I am like in love with having sex and even the idea of having sex. I lost my virginity when I was 16 to my first real boyfriend. at first it hurt but then after a while I got used to the pain. everytime I have sex it still hurts and I found out that I have a naturally tight vagina which is also a plus. we had sex almost everyday of the week and I was fine with this I even suggested it most times. we messed around for about two years but as we drifted apart the sex slowed down and then stopped. then I moved but when I visited I always found his number and we would meet up and have sex, that seemed to be the only thing we agreed on.

then for 5months I was not having sex ,when I met my (now) boyfriend andhe waited 3months to have sex with me. soon as we got comfortable with each other we began having sex on a daily basis and we still do.most of the time we use a box of condoms(10) in a week & 1/2. over this past weekend he stayed the night and we had sex 6times in a 29hr period of time. before he left I even felt like I was begging him to have sex just one more time.

I'm ALWAYS horny and I'm scared to pleasure myself so idk what to do. is this normal ? I mean considering my age and all ?