Hi, I’m 16 and my period is late, I’m a virgin and the only sexual activity I had was with my ex bf in november and we only dry humped like 3 minutes plus I was wearing a panty liner and he wasn’t even close to ejaculate. I know I have no chances to get pregnant but my period came november 29th and it always comes on the first, but this time it didn’t and I’m still waiting for it. My nipples hurt a lot but there are no changes in color or size and I have very mild cramps, could this be finally PMS or why could my period be late?