Every woman should appreciate her cervix.
During high arousal, your uterus lifts and there is a "deep spot" near your cervix that is quite pleasurable.
I repeat: An orgasm is an orgasm is an orgasm!
They're hitting your cervix. Add a pillow...change the angle or jump on top
Anytime something bleeds on a regular basis other than your period indicates something is out of whack.
During a high state of sexual arousal, the uterus lifts and creates more vaginal space exposing the "deep spot".
To avoid the discomfort of a lover hitting my cervix, I learned to climb on top and control the depth of penetration.