Now This Changes Things...

So, I took out all my positive OPKs and look at my chart now. (Scroll to bottom of page and click the little ticker with the snail) I'm so confused now. Maybe those OPKs were only positive cuz of the Clomid. But I did have that other positive on the 12th of this month (CD20) I don't know when I should test now. If I put in the positive on CD20 it says I Od on CD21 and without it, it says I Od on CD24. Is this even possible with the Clomid? To ovulate this late? If I really Od on the 16th, I'm WAY too early to test. And if I Od on CD 21 I'm still really early. Now I don't know what to think.

Here's the address for anyone who can't find the ticker with the snail
http://www.fertilityfriend.com/home/19c4c9