Does anyone know what could cause spotting on CD10? For years I've ov'd around CD20, but since losing 10 stone my cycle has changed so that the last couple of months I've ov'd on day 14/15 and had 25 day cycles. Today is CD10 (we've been TTC 7 months) and I have spotting. I've never had spotting at this stage in my cycle, and from CM etc I'm pretty sure I'm not ov'ing yet, so what could cause spotting at this point?