Suggest Treatment For Chronic Dry Cough And Sinus Infection

I have had a dry hacking cough for the past 2 weeks,getting worse now and more productive. My nose was runny with a lo of clear drainage, now turning thick and yellow. I haven t had much of a fever, low grade if any. I don t feel good ,chest feels tight and stuffy nose at night, causing a lot of sleepless nights. I am a healthy 62 year old female, I have had the flu vaccine. I work in a busy Drs office and could have been exposed to something I suppose. Also my head hurts occasionally and pain n my eyes and around my nose occasionally, I could have a sinus infection I suppose. I have been taking Nyquil at night for past two nights to help me sleep.