Pregnancy Blues

pregnancy is supposed to be a joyous time in a new mommys life. This has been one of the worst times of my life. Not even my SO seems to be supportive even though he says he is. Mostly I think he feels left out/jealous or maybe just not sinking in that I am pregnant and he needs to be sensitive to me. Does anyone else just feel so alone in their pregnancy ??? I've been praying for times to get better but deep into my second tri and I do t think it's gonna happen :-/