The surgery procedure itself is free of pain since general anesthesia is administered to avoid any pain felt by the patient during the operation.
In the recovery period, no surgical procedure is pain-free; this means you will feel bruised and tender with some swelling. You might be tired and have moderate pain for several days to a week post-surgery. But don't worry; the pain will steadily fade, and your doctor will certainly prescribe some painkillers, or you may even be given a pain injection to manage your pain.
Note that how long your pain lasts after an abdominoplasty depends on the type of tummy tuck surgery you have.