Depressed during pregnancy?

Hi everyone. I am 26 weeks pregnant with my first child. I am just wondering if anyone else felt/feels extremely low while pregnant? And if so what did you do about it?

I’m living away from home with my husband in the U.S and I feel like I’m totally down and depressed. Home sickness is a lot to do with it too I think. But I am completely horrible to my husband on a daily basis and I’m just making our relationship go from amazing to absolutely horrific! I worry if I am like this now am I gonna end up with severe post natal depression too..