I had this too. I had my first and he was 6 months old when I became pregnant with my second. Wow, was I tired. does your first take naps? Take a little rest yourself then. Ask your husband to watch baby while you rest on weekends or have him put your first to bed and you go to bed early a couple of nights a week. Or, have a baby sitter and you go off and rest. Try NOT to worry about your house. That was important for me. I had to let things go. Who cares if some toys are out or some dishes in the sink? This is the time to go easy on your standards so you can relax some. good luck hon and congratulations!