I have white streaks on my tonsils, and mucus running down my throat. is this tonsillitis? or something else

R/O TRUSH : TRUSH a topical yeast infection in the mouth can be treated with Viscous lidocaine alone or in combo with Maalox/Benadryl /nystatin (MAGIC MOUTHWASH) helps with a multitude of oral and dental maladies . GLOSSITIS /MUCOSITIS/DRY SOCKET/TRUSH. Seek exam and evaluation of treatment options and potential biopsy if symptoms persist or worsen

Post nasal drip: You do not have pain in your throat . You can have post nasal drip from various causes such as allergies, sinus troubles , cold , flu. See your doctor.