I know this is wrong for me to feel this way toward my husband and his child, but ..hey?

If a husband is stressed and having trouble with his then this is always partly the wife's fault. Are you washing properly down below and keeping your pubic hair well trimmed? It never hurts to wear something alluring and offer to do things for him that you have never engaged in before (eg rimming, toys). Be the wife you promised to be when you took your vows.