16 days post lipo. Tightness at back of thigh, severe pain when I stand up for first couple of minutes. Normal?

I got lipo done on my inner and back thigh, currently 16 days post op. I was perfectly fine the first week, but since have started to feel pain and tightness at the back of my thigh on both legs. I feel severe pain when I get up after sitting down or sleeping. Need to get up slowly and pain goes away after a couple of minutes. Have put on ace bandage on both my thighs, then the pain and tightness is lessened and bearable. Is this normal? Should I be concerned? Is there a fix