I have had regular periods for many months and for all my years they have been 6-7 days. I had unprotected sex at my time of ovulation and i had my period for 2 days only. no blood for the next two days, and now i have been spotting for 2 days. very light only when i wipe sometimes. red not brown. I have had headaches for the last two days. pee a whole lot more and had back cramps a couple times the week before i started bleedin. but my breast are no longer sore. whats up