Breastfeeding....please try again! Doctors and a lot of OB nurses are not that knowledgable, unless they BF'ed themselves. I suggest calling your hospital and having them find you contact info for a lactation consultant-PRONTO!!!
It is not too late!!!! If your hospital does not have info-call the hospital in the next town!!!
Exercise-you only had your baby 2 1/2 weeks ago, so right now I only suggest walking, and only what you are comfortable with, and what will not make your bleeding heavier. (That is a sign of doing too much, too soon.) After your 6 week appointment-ease back into other exercise slowly.
Eating right!!
Remember-you gained this weight over two pregnancies, and you JUST gave birth-so don't try to lose too quickly. You are still healing.