First a bit of background: I found out I lost my baby at 13 weeks gestation (mid-July). I miscarried on August 11. Exactly one month later, my period returned. As the doctor had predicted, it was heavier than normal and lasted about one day longer. I stopped bleeding on Saturday, so my husband and I had unprotected sex that night (assuming we would likely not conceive). Sunday afternoon, I started spotting lightly and it continued for about 24 hours. My question is: Could this spotting still be from my period even though I had no spotting for over 24 hours? Or is there a chance that we might have conceived and this be implantation bleeding? I have had implantation bleeding with one of my five pregnancies, but have no idea when we conceived to know the length of time between conception and bleeding.