I'm getting concerned... I'm CD15 and I still haven't got a positive opk or any ewcm. I stopped taking a prescription medication near the beginning of this cycle and now I'm concerned my hormones have been thrown off. What's the latest CD for ovulation? Could I have just missed it somehow? I'm taking opk with fmu (I know it's not recommended) and again in the evening before bed, the past few days I'll even take one around 3pm, today the line was barely there. It seemed like my opks were getting darker and I thought for sure I'd have my positive within the past couple days and nothing... this cycle is turning into such a mess. SMEP and preseed are "taking the sexy out of sex" according to OH, though I don't disagree. Feeling a little defeated right now and I was so hopeful on CD1.