Hi ladies. I had a miscarriage in November and following the doctors orders we waited until I'd had a period to start trying again. I'm now in that Cycle D19 and have been using the clearblue advanced OPK. I've been showing high fertility on the tests for a week now (day 7 today) but still no LH surge for peak. My cycle is usually 28/29 days and last time I went from high to peak within a day. Has anyone else experienced anything similar? How long was it til you got your LH surge?