Sore throat and chest pains. Do i do?

I've sore throat & cough congestion in my chest.It's been a month,feels like something's stuck down my throat & chest,this feeling sometimes goes away then comes back.I also feel chest pain/choking like feeling when this happens,the pain moves all around my chest & abdomen(left,right,up & down).I've taken Augmentin 625 & vapour inhalation & pantop D for5 days,I'm even having warm water & gargling with salt water.But it does not seem to go away.I don't have dry cough, in fact I don't cough much,its mucus & phlegm stuck in my throat & post nasal drip is adding to it.My nose also feels ticklish & I sneeze sometimes,body temperature raises a maximum of 99.5 but that is quite normal for me.My throat feels sore or swollen when I swallow my saliva & blockage type feeling when it goes down my food pipe,I also feels tickles/irritation down my food pipe and chest.It all started almost a month back when I had some spicy & oily food,is it GERD/Flu/Corona.Hospitals are shut in my area.What do I do?