I Have Swelling Like A Saliva Gland Infection, Have Taken

i have swelling like a saliva gland infection, have taken antibiotics
not solving the issue
I have a chin strap with my cpap so am wondering if the chin strap could be part of the cause. Had infected saliva gland fifteen years ago, antibiotic was good fix. Now last month again, and antibiotic helped only twenty five percent. So maybe have stones , seeing dr tomorrow but was curious if cpap chin strap could be cause. Been using strap maybe two years.