I took Clomid last month CD 5-9 and prior to and after ovulation had awful pelvic cramping so I knew the opk was spot on. This month i took Clomid CD 3-7 and was getting concerned about all the negative OPKs. Well today, I took another Clear Blue digital advance and it went straight to Peak today. No flashing smiling so no high surge. Is it possible to go from no surge to peak from one day to the next? Today is CD 15 for me. Oh and my pelvic cramping is no where as extreme as last month. It's very mild cramping. Help!