Thanks guys. Spoke to the head of anesthesiology (or whatever it's called) and he said that in theory you *could* feed after the anesthesia, but there will be a small amount passed to bubs. Not dangerous, but it will make her sleepy. He said (having 3 kids himself) he personally would pump amd dump for 24hours to make sure it's out of the body. But it's personal preference. Formula vs small amount of drug. I decided I feel 'safer' using formula. Plus the pain meds were quite strong, but same recommendation: not dangerous, but some will end up in the milk. So again weigh up your options...
Tonight is the last night of formula. Tomorrow she's back on the booby.

Btw she still hasn't pood since she's been on formula (almost 24 hours). Normally she poos all the time! I'm a bit worried... Is she gonna be constipated?