Hey everyone. I would like to start off by saying that I didn't have unprotected sex this month but my boyfriend did finger me and could have had some sperm on his hands. But thats not for sure. Anyways. I had some boob soreness for about a week today (but it stopped today). Anyways i am 16bpo and my "period" started on the day it was suppose to 14bpo. It started at around 3:30am and i woke up at 4:30am with blood kinda all over my panties. Its been kinda lite though. Like in the past 2 days i bet it would only have filled up two pads. I took a pregnancy test at 13dpo and it was negative. And i took one again today 3 days later and it still negative. Some women say that have bleeding during their period. Could this be implantation bleeding? Or just a light period. Also i did cramp some and it was kinda bad (thats normal) and I'm not having any more pregnancy symptoms. Could stess be causeing it to be light?