Have PCOS and was on 5mg of letrizole to induce ovulation. I had a u/s done and doc saw a mature follicle on my left ovary. He told me to do opk's starting that day, March 7. I tested 2x (afternoon and eve)that day and got what I thought was almost pos opk. The next day(March 8), Itested again, afternoon and eve and they both only had 1 line on so therefore, negative. So would I have ovulated that night (March 7)? And if I did ovulate then, I'm 8dpo. I have spotting since 6dpo. What's goin on?