Acid reflux, chest congestion, cough.

I ate some spicy food, developed acidity(I have a history of acidity and tonsils/sore throat which occurs just by having something slightly cold/spicy/tangy).The acidity increased and I started feeling like something's stuck in my chest. It looked like Gerd. I was advised to take vapour and antibiotics(Augmentin-625) with Pantop D but it didn't get any better, I developed cough( I was not coughing much but I had mucus stuck in my throat and chest with ticklish feeling) then I got ticklish feeling in my nose(like cold) and post nasal drip started, I've been gargling all this while. Now the congestion has suppressed a little but still I sometimes get chest pains that move all around my chest & abdomen(left,right,up,down) & it scares me and I have a constant temperature of 99-99.5°F all these days. I somehow started feeling a little better,but yesterday I had mangoes now I again feel sore throat,irritation(ticklish/prickly) feeling in chest & throat, chest congestion & gastric issue.