First of all you stop all the medications , it looks like too much of medications and what we call pseudomembranous colitis
,i.e, antibiotic induced diarrheoa.
You need some good probiotics and proton pump
inhibittors to supress your stomach acid. And a milder antibiotic for your cough and fever
Drink lot of water with ORS if you have too many of loose stools.
You can continue your emeset
if vomitting is still there , consult your doctor and tell him the whole ordeal you went through and may be he will give you milder antibioitcs .....