Missed period

Okay so i’m about to be 2 days late on my period and I’m worried.. on the 31st of January me and my boyfriend had unprotected sex but he pulled out and i know he didn’t cum inside me.. since then we may have played around and stuff a couple times but didn’t actually have sex.. i took a pregnancy test earlier today and it was negative, however i still haven’t gotten my period. I’ve been having cramps every now and then but they are mild.. I’m kinda freaking out.. what do y’all think?