Hmmm, if you're already run down, then I'd be pretty hesitant to jump back into the fray. Maybe give yourself some more time to fully recover from the birth, let bf get more established, and your DH and other kids more used to the changes and settled etc...

If you're having reservations and you're physically not 100%, then I'd wait it out to be sure that your body can definately handle it.

Your health (mental and physical) is so much more important!!