I can imagine...you guys working different shifts and then taking care of the baby. (I wouldn't bother with a doctor personally.) A good multi-vitamin is always a good thing, but it needs to be a good multi-vitamin. Just something at wal mart over the counter, isn't gonna do at all. I would go to a local health food store and get a whole food vitamin or even an herbal vitamin, but whole food would be your best. Elminating processed foods including sugar can only bring you down more.
Now to an herbal formula for energy...(I know they have them in health food stores, just not this brand...which I use). It's called Bee Power Energy formula. Here is the link and a little of what it says...
http://www.herbsfirst.com/descriptionsformulas/beepoweren...
Bee Power is a formula of skillfully blended herbs designed to help sustain the body with strength, energy and vitality. This formula helps to create whole-body balance rather than stimulate and burn out the body's systems. This formula helps to stimulate and combat stress and anxiety.
You can find something similar at a local health food store, if you don't want to order online. Good luck! And you guys take turns taking naps over the weekend too!