All the signs but no positive OPK?

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So I took Letrozole 5mg cd3-7 and today is CD16 with no positive opk.. I test in the morning and at night (I work full-time during the day)... I have twinges on my left side right inside of my hip (ovary pains, I'm guessing) and have felt bloated for the last couple days. I have random ewcm but nothing excessive. We are BDing every other day as my RE suggested but I just have a feeling I'm going to be out this cycle. 😒 Any kind words?