Thanks for query on HCM.
Your symptoms and history suggest IBS.
Irritable bowel syndrome (IBS) is a common gut disorder. The cause is not known. Symptoms can be quite variable and include
abdominal pain, bloating, and sometimes bouts of diarrhoea and/or
constipation.
Go for certain investigations like cbc,rbs,urine,stool,h.pilori test and USG abdomen to rule out diagnosis.
Eat more simple and high fiber diet.
Dietary sources of soluble fibre include oats, ispaghula (psyllium), nuts, seeds,fruits,vegetables and pectins will be helpful.
Have regular meals and take time to eat at a leisurely pace.
Drink enough water and other liquids like coconut water,lemon water,buttermilk.
Probiotic will be helpful.
Consult gastroenterologist for proper diagnosis and medical management.