How would you feel..?

Ever since i got pregnant my hubby kind of stopped beinf touchy and sexual with me. I knew that it was because i was pregnant and well i can’t force him to want me and have sex with me. I have caught him multiple times watching porn, which is okay. That’s human nature... but i have also caught him following literally naked girls on social media. I did feel bad and i asked him about it and he said i was “overreacting” that they’re just model and that if it bothered me he would stop. well he hasn’t and has been following more and more girls. What should i do? apparently he doesnt respect my feelings