Could Green Mucous With History Of Chest And Sinus Infections, Shingles In Mouth Indicate Recurred Infection?

I am recovering from back to back infections; first in my chest and then in my sinuses..approx three weeks between each and then recently I acquired shingles in my mouth near my sinus area. I have recovered but notice I still have green mucous (post nasal) first thing in the morning..I ve been told that this may be sinusitis...could the mucous mean that I haven t recovered from the sinus infection?