my husband refused to have sex with me

hello ladies, I need some advice, before I got married with my husband we were best of friends for over 2 years. he know everything about my past life n I know everything about him. we never hide anything from each other. so we decided to move from friendship to relationship, few months later I got pregnant, he was so caring but refused to have sex with me bcoz he think he will cause harm to d baby. after I gave birth my son was 3 months b4 we started have sex again. the problem is we have sex only if he feel for it. sometimes we don't have sex for 3 to 4 months, he said he is stress he don't feel for women etc etc. we got married 2016 since then things get worse. no more sex he goes out without telling me, if I called him he never answer my calls if he comes back he will say oh sorry I was driving that why I did not answer ur call. now am 25 weeks pregnant he is not interest end in my pregnancy n since he found out having a girl he don't care about me or d baby. he said he wanted only boys. i found 3 condoms in his wallets he said all men do that, few days ago I check to see if d condoms are still there I found only 2. he work night I do day but I notice he watch porn everyday after work. we had not had sex since I got pregnant. this pregnancy was not plan. as I said before we only have sex when he feels, so I was not checking my ovulation or anything. I was not expecting it but am d most happiest woman. i am 35 years old n he is 45. sometimes I think we should have just been friends than couples. our marriage is so boring we never go out as a couple if we do go out we go with d kids n we will end up shouting at each other. he told me he feels like child abuse anytime he had sex with me coz I look like a child. am short n I don't look 35, he is tall n big. he is always hiding his phone, he goes to bed or toilet with it. I am not happy I don't know what to do. sometimes he tells ppl that we are cousins not couples. sorry ladies for this long story. but I don't have anyone to talk to. I really need advice. thanks for taking the time to read this.