My husband and I have not had sex for more than 4 months. I don't know why but I just don't feel sexually attracted to him anymore. What should I do?

i don't think a sexless marriage can survive for too long. either one of you will crumble and look for it outside the marriage, or will want to move out. it is possible that you are going through hormonal changes, that can often do away with the sexual angle. also, if you are not attracted to him sexually, is there by chance anyone else you are attracted to? try and create situations where it is just the two of you, and instead of the sex, focus on physical intimacy, such as cuddling, holding hands, talking, kissing and so on. see how it goes.