Your symptoms may be due to a sensitive gut after a past intestinal infection, such as typhoid or E coli. After such infections, some people develop a condition in which the bowel becomes more reactive than normal, known as post-infectious irritable bowel syndrome. This can lead to a sense of urgency to pass stool, especially during exercise, because physical activity naturally stimulates bowel movements more strongly in sensitive individuals. Difficulty digesting milk may happen if your body temporarily struggles to break down lactose after an infection, or if the digestive system is still recovering and producing fewer digestive enzymes than usual. To help improve this, try eating small, simple meals instead of heavy or oily foods. Reduce milk for a while or switch to lactose-free alternatives. Curd or yoghurt may be easier to tolerate and can support gut health. Drink enough water and avoid exercising immediately after meals. Start physical activity slowly and gradually build up tolerance. If symptoms persist or you notice weight loss, blood in your stools, fever, or persistent pain, it is important to consult a doctor for proper evaluation.