and dont forget that you are getting up numerous times at night to feed your newborn...that in itself takes a lot out of you.

The c-sect should be right in a 4-6 weeks, but you'll not be getting a decent nights sleep for about he next 1-2 years. My only advise is to try and sleep during the day when the baby sleeps...its mostly lack of sleep that will be making you feel so lacking in energy. Also if you are on pain killers still, they could be adding to it.