Sore on left buttcheek after one month post BBL, also I wake up with headaches, what could this be?

A good candidate has enough fat available for transfer in the procedure. The amount of fat that can be transferred in a BBL depends on how much fat the patient has to harvest and the amount of space there is to move the fat into. It is recommended for the patient to have a BMI of 30 or less. If you are too thin, a Brazilian Butt Lift may not be possible.

Dear anne_96,I understand your concern. However, without a proper assessment it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment. Only after thorough examination you can get proper recommendations and advice.Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Hi and welcome to our forum!
Soreness after BBL may last for weeks or even several months. It may be asymmetric with only one sided involvement.  This should subside with time.
The most common cause of headache after BBL is anemia secondary to the procedure itself. Anesthesia effects have long worn off. It responds well to oral iron.
Contact your surgeon and discuss your difficulties.
Best wishes...