me and my bf had unprotected sex 2 days and the day before my period, he didn't come inside but im still very worried that 'precum' might've gone in??? anyways, i got my nexplanon right after i ended my period and im kinda scared there's a chance i might be pregnant ( most likely not ) but im just kind of scared. I read that there's a very low risk of getting pregnant right before your period starts but idk?