Great Question - Mild discomfort in the abdomen and buttock is normal; however, if major discomfort is experienced in either of or other regions of the body, following the surgery, than it is important to consult the doctor. Infection is a risk, but very few cases turn up with infection. Fat reabsorption is a possibility. Fat reabsorption, in the case of a Brazilian Butt Lift, is when the buttock absorbs the injected fat more than intended. The result is typically anywhere from 65 to 85 percent of the volume transferred during surgery. There is, also, the risk the results desired are not achieved. This is particularly true of patients with unrealistic expectations. It is also true of patients not already living a healthy lifestyle. The doctor, in such cases, will work with the patient to achieve acceptable results. The worst complications include medical risks such as organ injury, blood clots in legs which travel to the lungs, fat entering the bloodstream and traveling to the lungs, and even death.During your consultation your Board Certified Plastic Surgeon should go over the complications and risks with you. - Best Wishes