Anyone else ever feel a “clicking”/“popping” feeling during sex after an orgasm?

Maybe TMI, Idk how to describe it just wondering if anyone else has felt this. During sex my bf usually always lets me have an orgasm first and then we keep going until he finishes. Sometimes after I have an orgasm and we keep going I feel a “clicking” or “popping” sensation in my vagina when he’s going in and out? Almost feels like the head of his penis is getting caught on something idk. Is this normal or is something wrong with me? It doesn’t happen every time, only sometimes but it feels very weird. I’m also 15 weeks pregnant so don’t know if that could have anything to do with it. Does anyone know what causes that feeling ?