What Is The Cure For Headache With Green, Stinky Fluid Discharge After Tooth Extraction Followed By Infection?

This issue started soon after i got my upper tooth pulled on my left side, i ended up going back to the dentist like a week later because of pain and headaches. He took a look and said everything look fine, maybe it was just the after surgery affects. Well like maybe another week later i felt worse, i went to the walk in clinic after work, they said i had temp. over a 100 degrees. They gave me antibiotics and pain meds. They told me to go back to see my dentist because i had an infection, so i did. He still told me everything still looked fine, he ended up putting like a plug where i got my tooth pulled and that stopped the headaches. But i still have this green, stinky fluid that comes out of me constantly, i use a lot of tissue. My left side is always stopped up and blowing my nose all the time isn't normal i would love to get this problem fixed.