to miss your surge even if you're testing in the afternoon/evening? I have been testing every day between 5 and 6 p.m.

Thursday and yesterday I had test lines that were much darker then usual, but definitely not as dark as the control line. Yesterday, I also had (sorry TMI) increased EWCM, and cramping on and off. My temp also went up today, although I have to wait a few days to see if it stays up. All of that makes me think I O'ed yesterday, but I never got a positive OPK. Any thoughts?