Turned down for sex

My husband pushes me away..says he is tired..watched porn and takes care of himself. I am frustrated..I feel all bad when I read you ladies stories of husband's always wanting sex..everything else is great.I talked to him about it, he says basically I am not turning him on because I'm not being like porn girls..btw, I get it about once a month if that..I'm pregnant and he always talked about pregnant pussy its the best..but I still get denied...I need a boyfriend...