Are these feelings of horrible stiffening and burning sensation on my back and sides normal?

Hi and welcome to our forum!As you describe your pain as "horrible", I can only recommend evaluation by your plastic surgeon as soon as feasible. At 6 weeks out, the pain should be decreasing and you should be able to perform your activities of daily living without difficulty. There still may be a bit of discomfort with exertion.You mention that you just started sleeping on your back since yesterday. This new position may be responsible for a degree of new discomfort for a day or so. To be safe, it may be best to see your surgeon.Best wishes...

Dear Florida love,
a lot of patients complain about stiffening and burning sensation after liposuction. If your sensations don't improve with time or if they get worse, I suggest you to consult your plastic surgeon and get an examination.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

 Liposuction can cause a mild nerve injury called neurapraxia. This is caused by the fatty covering of the nerves being damaged. The fatty covering called the myelin sheath will eventually go back through a process called nerve regeneration. This process typically takes 2 to 3 months. During this time patients can have sensations that vary.  Some people describe it as pins and needles others have a sensation of itchiness. Follow up with your plastic surgeon. Best, Mats Hagstrom M.D.