I had a fibroid removal surgery a week ago, and I was terrified of what it would do to my supply and breastfeeding....
All those worries were for nothing! My supply did take a temporary hit for a few days (I was pumping on Thursday and Friday while LO was at daycare), but it has since rebounded and then some - I think because LO has been waking more at night; I'm pretty sure it's a growth spurt.
Nursing was a challenge for a few days with finding a comfortable position for both of us - side lying with a pillow over my sore spots worked best.
I think I might make DH bring baby to me for middle of the night feedings for a while longer...not having to get out of bed is nice! (I can't pick her up yet).