I had a v early miscarriage in December and since then I don't think I've ovulated because my OPKs have been negative. Before the miscarriage they were like clockwork and fully in sync with the Clue app. Can this happen after a miscarriage? I'm still having periods at the expected time although they are a bit more irregular than normal. Eg, usually they'd always come after 28-30 days and no more leeway than that. The last few months it's been 27 days, 38, 30 etc.