Question ..

C&D💍 • 19 , ttc # 1 💕

Has anyone been ttc for a long time, had sex at least every other day & not end up pregnant, but once started tracking with opks end up pregnant ? I’m curious because if the body holds the sperm to up to 5 day & we don’t go 5 days without sex, what can be the difference ? 🤔 I’m confused .