too young

so, i’m 14 turning 15 in two days. my boyfriend is 17 and we’ve been having sex since his birthday in april. every time we have unprotected sex i stress myself out to the point where i make myself sick. i also have a lot going on at home that adds to my stress. we had sex right before my ovulation day, but he didn’t cum in me. i’ve been stressing abt it ever since, along with my home issues. it’s been a couple days, and i feel awful and i’ve lost my appetite. am i just stressing too much? or should i be worried.