Fam i cant stop

I went from having it randomly like In the middle or end of the month ......to on October it lined up with my Bestfriend at college n came literally the first of every month ...came January on time ....now I'm waiting for February and it's three days late... Been discharging regularly tho. I don't think I'm pregnant .... Had sex in December n got January so Feb is throwing me off. I keep waiting for it to come slightly n its fucking with me I can't relax. I just wanna wake up and see I have to throw away a sheet. That's all that I need.