Should I be worried about feeling fluid moving in hips after Tumescent Lipo of the flanks post op 3 days?

Hello, I had tumescent lipo upper & lower abs and flanks. Since day 2 I noticed when I get up from bed or move my hips from side to side I'm feeling fluid movement and it's down near my upper hip area. Could this be seroma or just swelling? Do I need to get it sucked out or will my body absorb it? Really scared :( thanks