No period, negative pregnancy test , no symptoms

I’m currently 10 days late on my period I’ve had protected sex this month Unprotected in but I had my December period and he didn’t cum in me I took a test 12/25 it was negative i actually came in my period later on that night I took another test 02/01/2019 it was negative but I still haven’t had a period I never skipped a period before my period is somewhere between every 28-30 days I’m not on birth control haven’t been in birth control Idk why I haven’t had a period I’m a college student and a mom already I do stress and struggle with paranoia a lot but that’s never threw my period off before. I’ve been slightly overwhelmed this pass month but I’ve never missed a period and at this point I’m freaking out.