My husband, lost two of his closest friends four months apart (one killed by a drunk driver in May, the other was epilieptic and died from a Grandma seizure in September) and along with being very depressed over the loss of his friends was laid-off just before finding out we were pregnant with our first. He did not get a job until I was 7 months pregnant. While being pregnant should be one of the 'happier' times in a women’s life, for me it was not. I was worried and annoyed constantly. I asked him everyday what he did to better our situation and after a while we began to resent each other. He for my constant pressure, I for what I felt was his lack of self-drive. Now mind you, my husband is a very hard worker, enjoys helping around the house and is a fantastic father. But, none of this kept me from worrying about the future or the need to feel taken care of. We went to counseling for a while after he found a job and worked through all of our issues. I had to find patience and understanding, while he, after being unemployed for 8 months, had to find self-worth and gratitude. It was an eye-opening experience that strengthened our marriage and taught us to love unconditionally.
I know that your situation is different than mine, however the similarities are there. Could it be that you, like me, are resenting the fact that you are pulling the weight of the entire family? If so, a marriage counselor could really help. It could be that you are extra snappy with him. Or he, and to no fault of his own, could be over sensitive due to his inability to provide for his family. Either way, speaking to someone could really help. I also began taking Zoloft for my aggression, which really seemed to help. I only took it for about 6 months and I truly believe that it helped with my aggression and assisted in pulling us out of our doomed future.
Good luck to you both.