It is your responsibility to show and tell your boyfriend what you like. Show him by masturbating for him, or take his hand and guide him. Give him verbal encouragement while he is doing it so that he continues with what pleases you and stop doing what does not please you.
You are the only one that knows where and how you like to be touched. And you are unique. None of his past or future girlfriends will like it exactly the way you do.
So if he is causing you discomfort and does not give you pleasure, it is your own fault. Tell him what to do.
Take care, and please be very careful.