Thanks for your question on Health Care Magic.
I can understand your situation and problem.
You are mostly having drug induced
gastritis.
Anti inflammatory and anti pyretic drugs are used for
fever. And these drugs are known to cause gastritis.
If gastritis is severe than pain on swallowing , burning
chest pain,
indigestion etc are seen.
So better to avoid fever drugs. Drink plenty of fluids orally. Avoid hot and spicy food. Avoid junk food. Avoid large meals, instead take frequent small meals. You are taking correct medicines for gastritis. So continue
nexium and mylanta.
Recovery is expected in 1-2 weeks.
So for 1-2 weeks continue these drugs and above mentioned lifestyle modifications.
Don't worry, you will be alright.
Hope I have solved your query.
Wish you good health. Thanks.