how much did your skin slash fat weigh after thigh lift?

i'm having a thigh lift done on the 26th i was wondering how much did the skin and fat that they take out weigh? mine seems like it might weigh quite a bit there not doing lipo there just cutting it out from the back of my legs then pull it tight. cause when i exercise now it feels like i have heavy gunny sacks hanging on the back of my legs, i can't wait to get them cut out and tighten