Is EWCM a definite indicator of ovulation? I tend to get mine around CD16 or 17, but I’m only a 26 day cycle. Would that mean I ovulate around CD17 or 18? Does that decrease my chance of conceiving?

I’m 35, ttc #1 with my partner who is 50. We got pregnant by accident last October, then MMC in December at 12w (baby stopped growing at 8w) and been trying in earnest since March with no luck.

He is in good shape and has 2 kids so don’t think it’s male factor infertility. I’ve had CD21 blood work but not had my results back yet.