Before I got pregnant I loved having sex, after 20 weeks of pregnancy it changed . I hate it now ,…

Before I got pregnant I loved having sex, after 20 weeks of pregnancy it changed . I hate it now , its uncomfortable and sometimes painful .My daughter is now almost 4 months in about 5 days and I'm still not back to normal. I wish my Boyfriend would understand but he's such a dick sometimes. Today he wanted to have sex and I told him no, he got upset and said " I don't know why you got in birth control if we don't shit" . like why does he have to say shit like that!