I Had A Cold For10 Days, Developed Sinus Infection,was On

i had a cold for10 days, developed sinus infection,was on clavulin/amoxil for 7 days. now recurring sinus pain, stuffiness, post nasal drip. have tried using Neti Pot., Some mornings fair amount green nasal discharge. ? Sinus infection not cleared up? Tend to get sinus infection maybe once every 18 months.