Have anyone like me?

I don’t know why after gave birth my first baby, my sex drive really decreased, I don’t want anything to do with sex. Especially currently, I’m pregnant with number 2, I really don’t want to have sex. My OB told me, low placenta so no intercourse during pregnancy. I told my husband about that and told him I don’t want sex, but he keep on asking and sometimes even forced me into it. Every time he did that, I really felt frustrated and unhappy (if I don’t give him, he is also unhappy). Even he touches me, I also don’t feel good. What should I do?