okay someone needs to tell me whats happening. last i had sex was sometime in December before my previous period. i got my period on 15th of dec after that. this month, im late by almost a week and this never happens. I'm never late. i have no other pms symptoms either other than my skin breaking out a bit. however i was down with the flu for a couple of days last week and my sinuses been acting up since. i know it sounds silly but could i be pregnant?? really worried!! please help