Is it harmful to a woman when her partner continuously hits her cervix during sex?
I learnt recently that men can actually feel when they are hitting against a woman's cervix during sex. Some women find it painful while others seem to find it stimulating. Is it harmful to the woman though if this continues over time?
You should eventually get used to your partner. Generally the womanly parts are pretty good at adapting. Unless your partner is double the normal size and is atrociously aggressive, I really don't see a problem occurring. Also, technique is another, if he's too much too soon (not aroused all the way), that can cause pain and not allow your body to move forward to adapting.
Adding to what OSF said if it is uncomfortable for the woman there are positions that are more comfortable to her and give her more control of how deep the man can go. Men with a longer reach than about 7 inches should be sure to have communication with their mate about the issue to ensure maximum enjoyment by both partners.