Although it is probably just fine, my advice is that it is probably best to wait until you are feeling better before proceeding with the Kybella treatment.
I recommend following up with your Doctor about their recommendations. I recommend that it is best to wait until your sore throat has improved before getting Kybella. Kybella is good for removing stubborn areas of fat. Keep in mind, a combination approach is needed to get the most improvement with non-invasive options like Kybella. I recommend Kybella with thermage, ultherapy, exilis. VASER liposuction in combination with ThermiRF is a great alternative for contouring the chin, if you're a candidate. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer