I ovulated on the 5/19. (Per clear blue digital )Bd 17,18,20,21. Pretty sure I had that covered lol. Af due today. Usually cervix is low hard openish. Right now is med med closed. And I mean so closed I cant feel the opening... Any advise before I poas? Dont want to waste the money but have no regular pms symptoms. Minor twinge and heartburn is about it. O, and an occasional twinge in,my back which I think could just be the weather... Any advise would be appreciated! Thanks