For the first time I started taking ovulation tests every day since cd10. Since yesterday or today was supposed to be peak, I was doing twice a day. Never got a dark line. Then I read that when you are late 30s they may not be accurate cause your surge is more fleeting. Is that true? Anyone in late 30s never see a surge? Try anyway during fertile week? Conceive even with no surge? Don't want to waste time and money on them if they won't pinpoint for me. Using wondfos. Age 39. Ttc #1