I usually have a 28 day cycle on average. I have my LH surge on Day 14 so I assume I ovulate somewhere from day 14-15. Today is day 19 and I have still not had my LH surge. What could be the cause of this delay? I began testing on day 12...is it possible that I ovulated earlier than that and I missed it? I am 29 years old and a mother to a healthy 10 month old. I do not chart my BBT's because my sleep is irregular. Thank you for your help and any insight is greatly appreciated.