So I just started using cb opk's. I tested Wednesday morning and it was low fertility. I missed testing Thursday (duh!) as I was ill, tested Friday morning and had high fertility. I thought this would last a few days but no luck. Today (Saturday) I got peak fertility. But as I've been ill we only bd on Wednesday. I might have already ovulated so have missed it. I'm so frustrated with myself. I was only testing once a day so I could have been peak awhile already. Any advice appreciated as I just can't catch a break with trying to conceive and not having much luck post mc.