I took Clomid last month and ovulated CD19. I took it again this month and got a positive OPK CD14 and BBT spike from CD13-17. Then my BBT dropped significantly for a few days and I was so upset. I've been taking OPKs everyday just in case but all negative. TODAY I am CD21 and noticed a dull pain in my lower right abdomen/ovary when I woke up, and BBT rose a little. I took an OPK to check and it was positive! What's going on?!!