I don't think it's a question of judging that a mother goes back to work early, Primavera. The question is: is it doable. If you can afford a live in or live out nanny, then in my opinion, and if it's a straight forward birth, then yes it is doable.
However, it is difficult to find childcare for a young baby. Contrary to what other posters have said, it is very difficult for a childminder to look after a baby younger than 6 months old, as there are so many bottles, nappy changes and naps that there is little time to entertain, educate, cook and properly look after the other children. I have been a childminder for ten years and I have never been asked to look after a baby younger than 5 months old. And just to confirm, all the nurseries I know will charge more for baby under 6 months old.
A nanny would have only one baby. But they cost a lot more money.
OP, also please consider that if your baby goes to a childminder or nursery they will be exposed to lots of bugs - and will probably get eye infections, stomach bugs, colds regularly and you will need a plan B - either you and your husband share the time off to look after a baby that is ill, or you have family nearby.
Of course, it's not easy on a practical level - without taking any judgment into consideration. However, based on a few conditions (your health; recovery from the birth; the health of your baby; equal share of responsibility with your DH; a good nanny; a supportive employer) then yes it's feasible.