Coughing up phlegm, runny nose, sweating, and sneezing for almost a month?

VolunteerGal - 2 possibilities come to mind = Chronic, active sinusitis and perhaps a severe allergy. I suggest you try to see an Ear, Nose & Throat physician, also known as an otolaryngologist. Check the phone book under DOCTORS or ask your doctor for a referral or call a nearby hospital ENT Department.