Well as you describe,green mucus is suggesting Bacterial sinus infection.
And you need to be seen by ENT specialist for a clinical examination and if required antibiotics can be prescribed.
You should continue neti pot and add menthol steam inhalation with saline gargles.
You can take Ibuprofen alternately with Tylenol/Aspirin for pain relief.
You should do warm compresses with a heating pad on head.
Also your blood pressure should be monitored.
You should elevate your head while sleeping.
Use a humidifier in your room.
You can take OTC Sudafed.
And nasal saline spray can be helpful.
Do gentle massage with muscle relaxant ointment on back of neck also.
If pain is getting worse then see a doctor at ER.
Hope this helps.
Let me know if you have any further query we can discuss it thoroughly.
We are here to help you until you satisfy.