If you have acidity issue, no need for Hospitalisation, it can be treated at home most of the times following some diet and lifestyle modifications.
Consult a Gastroenterologist and do an ENDOSCOPY ( which is THE test for acidity issue) and Ultrasound scan to rule out Gall stones.
Till then continue Nexpor rd or Pan D before breakfast
Health Tips
Avoid nonveg, spicy food, outside food, coffee, alcohol and smoking if any.
Avoid sleep immediately after food, especially in the night