My last period occurred the 17th of September. My boy and I had unprotected sex on the 4th of October. I ovulated the 7th, so sex especially unprotected was very unwise. It has been 5 days after intercourse and today after practice for the sport I play I found blood. (not getting too personal) It is not exactly brown in its disposition (containing some red pigmentation), but I am not suppose to get my period for another 12 days. I figured if I was pregnant I would feel very fatigued and unable to perform well on the field, but I was absolutely fine. I have had no symptoms of pregnancy. My cycles are off sometimes. Once I even had two periods in one month. Could I possibly be pregnant and experiencing implantation bleeding, or could I be getting my period early?