Two days before my scheduled period, according to my tracker, I started spotting. Nothing heavy or normal. It is brown and has only been red a few times. I don't need anything more than a panty liner and even with that I could go with just one a day and have the blood barely show up. I don't feel like I always feel around my period at all. I took a pregnancy test 3 days before my period was scheduled to start and it was negative. Could it be implantaion bleeding? If so it would have started 12 days after sex and 10 days after ovulation. Isn't that to long of a window for implantation bleeding?