Hi, Thanks for posting your query. With the available described symptoms, there could be possibility of acute viral gastroenteritis. Presence of body ache, watery diarrhea and abdominal cramps suggests the diagnosis. You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up. You should go for complete blood count, serum electrolytes and renal function test. You should take complete antibiotic therapy, probiotics, antispasmodics and muscle relaxants. You should maintain your hydration by taking potassium rich supplements. Avoid milk and all milk related products such as cheese and butter. Menstrual irregularities are common during menopausal stage and this should be considered as normal and you should also consult with gynecologist. Take care, Dr. Mayank Bhargava