Lower abdomen pain

Rita • I don`t know
I have been away for about 3 weeks, so upon getting back I had an hour of intense sex with my boyfriend this morning. When we started I felt him hit something that really hurt but when he saw I was in pain he stopped,  all day my lower abdomen has been hurting.  
Ps. I'm ovulating 
Is it just an ovulation thing or should I be worried?