Vaginal discharge post sex

CB • Married. 💙💙

Has anyone ever experienced clear, stretchy vaginal discharge after sex (with male ejaculation)? I have been using OPK strips the last 4 days and today I tested twice. Once at 10:30am (negative) and then again at 630pm (also negative). My husband and I had sex around 1pm and I just noticed discharge at 10pm. Is it possible that I’m about to ovulate and just missed my surge? Or is this discharge possibly from my husband’s ejaculation.

It’s crazy how much more you pay attention to stuff when you’re TTC! LOL. Thanks in advance, ladies! 😘