I had a hematoma not long after surgery, had it operated on a week after my original surgery. I swore that it had developed another hematoma after the second surgery because I had swelling still and it felt hard (which the nurse told me was blood or other fluids drying up and they'd be reabsorbed by my body). I had a lot of swelling even 3 weeks after my hematoma surgery but it eventually went down. And also, some of what I thought was swelling was just some excess tissue that my surgeon can remove with lipo later on