hi, i had unprotected sex a while ago. i took 2 pregnancy tests before my expected period date and they were both negative. i ended up getting my period 3 days late, it is normal bleeding. last month i was in a lot of pain when i was on my period, but that happens sometimes. the only weird thing is my periods seem to be a tad shorter, before they used to last 8 days, now they are around 4 days, with the same amount of bleeding.