Vibrator

So my bf used a vibrator on me multiple times and after I orgasm I get really intense stomach pains. Idk if it's cuz he's hitting my cervix (which I don't think so cuz it's not that big) or the vibration is too strong. The pain is so bad it's hard to sleep or get comfortable and my stomach becomes really tight like someone is squeezing my insides. What do yall think?