I try to guide my boyfriend on how to please me but he want to be totally in control

Whenever me and my boyfriend have sex he's always trying to be in control and I try to tell him that some of the foreplay that he performs on me hurts and some of the positions makes my vagina hurt but he always responds back with "I know what I'm doing" and still continues, sometimes I barely get to have an orgasm because of this and it leaves me very frustrated ..what should I do?