Anonymous wrote:He is physically hurting you and making your sore. Go ahead and be completely honest with him and it's fine if his feelings are hurt
This.
How old are you? When I was in my teens and early twenties trying to keep up with my boyfriends demand I thought I was abnormal because I would get sore and sometimes get utis from the frequent sex. I was not abnormal. Many women get sore or utis from sex twice a day, or even everyday.
Also make sure you are using enough lube. Try a silicon brand.