How long is it normal to hold water weight from liposuction?

I had a BL & lipo preformed on my abs, flanks, and bra fat almost 8 weeks ago and I still weigh 6 to 7 pounds more than when I went in for surgery. I stayed off the scale for the first 10 days. But I have been hovering around 141 to 142 for about 5 weeks. I was 135 before surgery. I He removed 3 liters. My mid section is about an inch smaller than before but it seems like my butt and thighs have definitely gained some size. Is this normal?