bleeding -- edit TMI in comments

Sasha
So I had sex last Friday, sept 23rd. On Monday sept 26th I started bleeding. At first it was a light pink ... every day since then I have been light spotting. It's not my period..I was ovulating the 22-28, so I did have sex while ovulating. I'm just confused to why I am still bleeding. It's like a few drops... please help if this has happened to you before or know anything about this:/