Thanks for your question on Healthcare Magic.
I can understand your concern.
Your daughter is mostly having
hormonal imbalance.
She is having menstrual irregularities and at young age, hormonal imbalance is the most likely cause.
Hormonal imbalance can also cause severe
gastritis and
bloating.
So first consult gynecologist and get done clinical examination and hormone levels. She may need hormone pills to regulate hormones.
For stomach problems, take combination of
pantoprazole and levosulperide on empty stomach.
Ask her to avoid hot and spicy food. Avoid junk food. Avoid large meals, instead take frequent small meals.
If she is having stressful life then ask her to avoid stress and tension, be relax and calm.
Don't worry, she will be alright with all these.
Hope I have solved your query. I will be happy to help you further. Wishing good health to your daughter. Thanks.