Hi Everyone! I am wondering if any of you would be able to help me and tell me what you think...my first cycle off the pill was 35 days and the second one was 39 days. I am on CD 17 of the 3rd cycle. This will be my first month actually trying. I bought some OPKs today. When should i start using them? I don't know when I will ovulate. I have enough that I can start right now and do it for the next week. Also...if you do suggest me testing every day starting now..is it good enough to test once a day or should I be doing it twice a day? I've read on here from some people saying that they missed their ovualtion because they tested to early in the day and the surge happened in the afternoon. Thoughts??