I had liposuction on my abdomen, back, thighs and knees about 2 weeks ago. Because of the discomfort, I have only been able to sleep on my back. The last three nights, I woke up sweating and skin on my back/butt were hot (like I was using a heating pad). Is this because I am only able to lay on my back? I don't think it's an infection since I am on some pretty heavy antibiotics and have no other symptoms... Any advice?