I had sinusitis at the end of June and went to doctors and had a course of antibiotics which cleared the terrible headache and the congestion, but I haven t felt right since I get very bunged up and have quite alot of flem in the mornings. And the last two weeks I have been getting very nauseous that comes and gos but I will have at some point every day (there s no chance I m pregnant though) and extremely fatigued and I have a sore armpit and was wondering if I should go back to the doctor? I m 20 female, I keep very active in my job as I m a carer I eat fairly well, smoker about 10 a day and no ongoing health conditions.