I think I'm done with sex

So last year I lost my virginity at the age of 16 going on 17 now I'm 18 me and my boyfriend have a lot of sex mostly every month but I always am afraid of getting pregnant we don use condoms but still get scared and honestly lately it been worse to I'm stressing out my period is late or I make myself sick I love having sex it feels amazing but I kinda wish I was a virgin again so I didn't really have to worry about my period coming it...sex has made my life more stressful 😕😫😩 can anyone relate