The most common cause of nausea after tummy tuck, or most cosmetic procedures is a sensitivity to narcotic pain medications. Switching to acetaminophen or ibuprofen can be a big relief. Best of luck, peterejohnsonmd.com
You may be experiencing the result of a combination of reactions to general anesthesia, pain medication and antibiotics. You could also have caught a virus---or all four of the above. Definitely bring this to the attention of your plastic surgeon. Depending on what antibiotics were prescribed, some patients are quite sensitive to them and can have severe gastrointestinal symptoms. Hope this problem clears up soon!