Is it normal for breast to leak with milk after TT, BBL and lipo - I also had a muscle repair.

Occasionally lactation can happen both before and after surgery. Usually, this is not a problem. You likely had a mammogram or another screening test before your procedure, so any abnormality should have been picked up at that time. You should definitely follow up with your plastic surgeon and follow their recommendations. Good luck!

Sometimes surgery on the breast can stimulate milk production.  You might want to see your gyn to check your prolactin level.