Stressed out marriage

My marriage is under a lot of stress right now. My husband is stressed because he has to work more and we need money for the new baby we are having. It seems that he is easily jumpy and ticked off. The only time he is nice to me any more is when we're watching a show together. So sometimes I could be asking him questions and he thinks that I am nagging him just because of my curiosity. Like today, I asked him about our insurance and how much goes into it and he started repeating the same thing over and over again louder and louder. That really hurt my feelings. Anyhow, I told him that I do not like being treated that way. First he was saying that life sucks because he's the husband that gets no appreciation for all the hard work he does and Im the wife that doesn't feel appreciated but I just told him that I just don't like being treated that way. This morning he was trying to get to tupperware in a cabinet that I had just recently reorganized and he said, I dont know why I even bother, sometimes I wonder why I dont just get an apartment and go live by myself. Then later on when I asked why he was so mad, he said, well just because it's the only way we can put stuff away doesn't mean I have to be happy about it. Because literally there is nowhere else to put the tupperware but in this little corner where mr. tall man who whines about everything has to bend down.

I'm not married and I don't have kids so I'm sure I can't fully understand your situation. I do however have a boyfriend who is extremely stressed and run down from work. Our relationship has been deteriorating for a while now and I am also lost as to what I can do. He has become very short tempered and selfish. I have tried to remain supportive but am now struggling to do so as the whole world seems to revolve around him. Do you think it would be valuable to seek professional help or do you think it would simply add insult to injury?