Your symptoms are most likely due to acute gastroenteritis/food poisoning, with some residual gastric irritation, bloating and altered bowel function after the diarrheal illness.
The fact that the diarrhea is improving and you have no fever, vomiting, blood in stools or dehydration is reassuring.
Next Steps
For now
Continue good fluid intake/ORS and gradually return to your usual diet rather than staying on a very restricted bland diet.Avoid very oily/spicy food, alcohol and excess tea/coffee for a few days.
Avoid taking antibiotics unless specifically prescribed, as most uncomplicated foodborne diarrheal illnesses settle without antibiotics.
You can continue symptomatic treatment only as advised by your doctor.
Health Tips
Seek urgent care if you develop severe/worsening abdominal pain, fever, repeated vomiting, blood/black stools, marked abdominal distension, or signs of dehydration.