I'am currently on bc, but on august.20/21 I missed pills (which was day 12/13) and had unprotected sex days leading, and during those dates. I took two on both the 22 and 23 to catch myself up. But the past few days, I've had strings of blood in my discharge when I wipe. (currently on day 19) I found it more common when I wiped on day 17&18, just found the spot once today. My period isn't due till August 31, could this have been implantation ???