Hmmm, well I'll tell ya, I often have those pains throughout my cycle. I never really know what they mean. Did u pick your O date on your chart because of your + opk? I'm not sure if that's correct. You actually could've O'd on cd16 and that could be where your pains are coming from. But it's hard to say with your temps the way they are. Sorry I'm not much help. Good Luck!