Sorry for late reply and inconvenience.
Well as you describe,possible causes may include Bronchitis/Pleuritis,Gastritis.
You shouldn't ignore your symptoms and undergo X-ray Chest,Upper GI scopy,Liver function test and a clinical examination by your regular doctor in next few days.
You should try OTC Prilosec.
Also take OTC Robitussin DM.
You should take steam inhalation and saline gargles.
You should elevate your head while sleeping.
Use a humidifier in your room.
Start a probiotic.
And take metamucil/Simethicone.
Hydrate yourself with plenty of fluids.
If your symptoms are getting worse then visit ER.
EKG must be done in your case.
Hope this helps.