Trying to figure this out. Help? Please.

Okay stay with me because this might be a lengthy post. My last period was 9/6-9/10. Glow predicated my ovulation for 9/26. My darkest opk was 9/30. Glow also predicted me to start my period 10/10. Now obviously that puts me at over 2 weeks late IF i ovulated on time. But say I ovulated later....the last time I had sex was 10/1. And sperm can live up to what 5 days in you?...so even if I ovulated on 10/6 instead that would put me at 1 day late for a period. I've had no clear positive hpts so I'm starting to feel like maybe I never even ovulated??

Now i know alot of women will say "we dont know. Call your doctor." And i plan on doing that but I feel like y'all have really good advice and maybe someone has been through this so I just wanted to see what you thought.