Anyone ever not get a positive LH surge and still end up pregnant? I used clearblue digital tests. I have a 31day cycle and usually ovulate around day 16. Glow has been bang on accurate. But this month I haven't gotten a smiley face yet. I test twice a day. Morning and evening. Last month I got the smiley face for 2 days. It's currently cycle day 20 and nothing. So I dont believe I have missed it? Or may ovulate later then normal? Anyone experience this!?