Just a little question from your post on OPK's. When did you start testing(what day in the cycle)? It was suggested on the pack that I began on day 11, but I didn't want to miss it so I began on day 7. I'm on day 13 now and as of yesterday, it was negative. I'm going to keep testing to see if I get a positive. Surely I will. I just hope I haven't mistaken it or something. What do you think? None of the tests have showed a dark line. Is it too late to get a positive? Thanks a bunch.