Can a sinus infection cause red spots on tonsil? i have 2 red spots on left tonsil, no sore throat or swelling, just feels like a sinus infection.

No: The sinuses can not directly cause 2 red spots on the tonsil, but the 2 red spots on the tonsil could represent a viral infection that may be associated with acute sinusitis. See an ENT doctor to evaluate your problem.

Probable viral infec: respiratory virus can cause various symptoms, combined with allergies. usually swollen red painful tonsils are reason for seeing doctor