What Causes Pain In Right Ovary Side After Intercourse?

Hi, Im 18 and am currently on the microlite contraceptive pill. I have reciently I am getting a wierd pain in what i can only guess to say is my right ovary if my boyfriend ejaculates inside me during sex. I am slightly concerned cause i think the right side of my womb or bladder ( that general area ) i think is slightly raised. So i was just wondering if this is something i should be concerned about and if i should go to see me doctor ? thank you for your help