Hi..
Welcome to HEALTHCARE MAGIC..
As per your complain swollen tonsils or tonsillitis along with
pain in teeth and headache points towards
sinus infection known as Sinusitis and there might be
post nasal drip that is causing infection in tonsils and inflammation is leading to redness and swelling of tonsils secondary to post nasal drip..
The white spots that were present on tonsils are pus pockets and can be commonly due to bacterial infection..
Nothing to worry,take another 7 days course of
azithromycin [z-pak],take anti-inflammatory medicine like Ibuprofen,do warm saline gargles,do steam inhalations, saline irrigations and use a steroid
nasal spray.
Use a humidifier in your room.
As the sinus infection will subside the pain in teeth and headache will also resolve..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.