What Causes Dry And Sore Mouth And Throat During Nasal Breathing?

Female, 40 s, with a history of tonsil and throat issues, tonsil curds, ext. and I am currently having a issue, came on with a hot, dry & sore when breathing in the nasal area that comes into the top of my mouth, then is gradually got sore around the entire circumference of my throat in front of tonsils, My tonsils are swollen, sore and then I get these nasty needle poking sensations that makes me cough uncontrollably, often until I vomit. The needle poking feeling is also in the lower part of my throat, and this makes sleeping impossible, as soon as I relax or stop sucking a cough drop, I have to cough. My throat is so sore I can barely swallow water. It feels like it is restricted substantially. I also have ear pain,dull ache or like a needle shoving down canal. This time I have a low grade fever and aches. Everyone saying I have a cold/flu. went to clinic, and they suggested I have a sinus infection, and perscribed Amoxicillan if I didn t get better in 7 days. My concern is in the past, I have taken antibiotics for similar occurrences and I developed Thrush, which REALLY made the issue complicated. My past Dr. (no longer in his area) would generally always prescribe a Medral Dose pack right away, which seemed to do the trick, but this clinic insisted I weight for it to clear up or take the antibiotic if things didn t clear up in 7 days….. I really can t afford to just hang out and with this kind of pain, coughing and overwhelming crappy feeling and run a business for 7 days, or risk the chance of thrush complicating it. Any suggestions other then Ibuprofen, aleve, sudifed, nyquil as non of these things seem to help the Needle poking, or painful throat.