Ahhh help!!!

Me

I have never had this happen and I need some advice. Hubs and I are trying for baby #4 and I’ve been <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> since the last day of my most recent period. These are my OPKs and not a single one has been positive. I’m now on CD 20 and still negative. Do you think I maybe missed my surge? It seems unlikely but I’m totally dry, no cm, and no other symptoms. So frustrating because I’m 39 and have always been regular 28-30 day cycles.