I used opk on day 6 of cycle as my opk kit sugested. I poas for 3 days and thought ..oh great so now I am going to ovulate ealry this cycle. becasue I was having faint lines so early I had ovulated and bd on the 7th of August had what I thought was AF on the 17 for 3 days then got line on opk at what I thought would be cycle day 6 turns out for me it was actually a + pregnancy.I would not have thought about poas only I had seen on a nother site how some poeple had used the opk for a test. Only then did I use a hpt. I hope for you it is a bfp and that you can tests again soon if you can wait that long.