I'm on cycle day 25 & 13DPO..period was due two days ago and never came. I tested today and got two BFN's. But I also took an OPK and it was positive! What the heck is going on ? I'm also not having any period symptoms. Just slight abdomen cramps. Anyone else ever experience this? I already ovulated this cycle and it was around two weeks ago so I don't understand why I'm receiving a positive OPK..and negative HPT's. HELP please.