Ovulation or cum ?

I am an avid patch user and have had my current cycle of patches on for the past 2 weeks. Last night I had sex with my fiancée without a condom and he came in me. I am not worried as I am using birth control but this morning I am feeling very “wet” as I usually would during ovulation. Would this just be cum coming out a day later or should I act quickly to get planB Incase of pregnancy despite my patch.