I had this happen to me last month. I was told that my body was trying to ovulate and it got all geared up but I didn't ovulate until the following week when I had another surge, with more fertile cm, and crazy ovulation pain. Almost 2 weeks later, I got my period so I know that's when I ovulated.
I've googled ovulating twice, but it seems that if you do ovulate twice it would be on the same day. This is 4 days after my first positive.
Thanks Dani. I really feel like I'm ovulating now. Just did another opk and it's still blazing positive. I'm just upset that we spent money for an IUI on the wrong day. My dr did said at my u/s scan on day of IUI that follicles were collapsing, so I don't know what to think?