Red inflamed throat, pain swallowing, green mucus and postnasal drip, ear congestion,no fever, no pus on tonsils. went away came back week later?

Sounds like a virus: You are describing a upper respiratory infection. Many of these can last several weeks before your feel normal. It is also possible that you have caught a second one. Try some OTC sinus medication for the pressure and postnasal drip. See a doctor if things worsen.

Infection: It may be a sinus infection or only allergy related. I would see a physician