Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
Omeprazole,
Amoxicillin and
Metronidazole all are
pregnancy category b drugs. Means they are comparatively safe in pregnancy. Therefore your doctor has prescribed your wife these medicines.
However every medicines (except nutrional supplements such as iron,
folic acid, etc) should be avoided in pregnancy, If a person can be treated without them. Therefore some doctors have suggested you not to take these medicines.
According to me she should Avoid these medicines at first & eat healthy foods like green leafy vegetables, fruits, whole grains, etc. Avoid spicy & fried food which may cause acidity like problem. Drink lot of water minimum 2-3 litres a day.
If her problem persists then she could take these medicines as prescribed by her doctor.
Refer to her gynaecologist/gastroenterologist
Hope this information helps