I'm four days late and have had a vvvvvvfl for two days- today I wiped blood and thought for sure AF was showing her ugly face. Then NOTHING- NOTHING since. Just took another test and another vvvvvvvfl- is it possible to have implantation bleeding this late? Mind you, I didn't use opks this month, I only went by my glow prediction and (trying) to track my cm (first month tracking cm so wasn't 100% sure if I was right in ovulation or not) just looking for a little guidance ladies.... please help me!!!