so i recently just lost my virginity to my boyfriend. i'm almost 17. and the first time we didn't use any protection and it hurt too bad anyway so we had to stop. he didn't cum at all but i'm really paranoid. the second time, we used a condom and i think it's all fine. however i was supposed to start my period yesterday and i still haven't. so i dunno if i'm stressed and thats why it's late or there's a chance i'm pregnant. but i can not be a mother. please help.