I had something very similar this cycle. My temp went from 97.5 to 97.1 on cd16 and cd17 and then on cd18,19 and today, cd20 it went up to 98.1. I had pretty intense pain on cd17 too. Worse than I've ever felt. Then when I woke up the next day, my temp went up and the pain was all but gone. A little tender, but nothing like the day before. I did 50 mg. clomid cd5-9