Ok so I was in my fertile window Sunday to Saturday so all last week I was taking my opks and bbt and bding a lot. and yesterday I noticed I started bleeding, I figured no big deal maybe it's just some spotting well the bleeding is still happening but I'm not suppose to start my period until the 28th. Any suggestions on why? I've been ttc for 3+ years and it's starting to really bring me down. I was so hopefully this time :(