Had abcess tooth and got prescribed amox/clav 400 twice daily
You seem to be having allergic rhinosinusitis.
You are having allergic rhinosinusitis. The most common cause of it is viral. You have completed 10 days course of antibiotics so no need of taking antibiotics for allergic symptoms. Take steam inhalation,fluticasone nasal spray and betadine gargle. Please don't have steroids too much and taper it off. No need of steroids in viran infection unless you have much breathing difficulty.