Annoyed at my partner

Since I've been pregnant my breasts feel heavy and am quiet sensitive by the nipple area. My fiance touches them and they hurt, he then says I'm faking how sensitive they are and gets annoyed with me. And I get pissed that he's ignorant about it and yet won't bother to actually do some research about pregnancy stages. I literally got in an argument with him that my weight drops and goes up frequently and he said I need glasses because I didn't see the numbers correctly. What a jerk!!!! Should I take him to some pregnancy class?