Are these signs of a strained marriage?

What you describe is two "pis*ed off" people. God only knows what's stuck in their throats and it seems neither one is willing to find out! All their doing is destroying themselves. Ultimately, they'll leave each other and be bitter for the rest of their lives. The child will never really get over it! And sadder still is the fact that just a small effort for help from each could easily start a cure. Too Bad.