Just noticed irregular/scalloped bumps on back of tongue on sides - one side worse than other-they don't hurt or bleed - what could this be? worried

Sleep apnea: Tongue scalloping (marks of teeth on the borders) is a useful clinical indicator of sleep pathology and its presence should prompt the physician to inquire about snoring history and polysomnography test-sleep study. Clenching your teeth also a cause for the tongue scalloping.

Bruxism : Scalloped tongue is a sign of bruxism and sleep apnea. See your dentist for an evaluation and treatment.

Could be: Could be normal anatomy. Could be that it's been there for long time and you're just noticing it now. Could be a problem area. Only way to know is have tongue examined dentist or physician. Please make an appointment.