This sounds like food-related acute gastroenteritis that has now dragged on despite antibiotics. Diarrhoea that keeps returning the moment medicines stop can be due to post-infectious gut irritation, lactose intolerance after infection, or an incompletely treated infection - and repeated courses of antibiotics themselves can prolong loose stools by disturbing gut bacteria.
Next Steps
Please stop self-medicating with repeat antibiotics and see a physician in person with a stool routine/microscopy and, if it has lasted over two weeks, a stool culture and basic blood tests. Meanwhile take plenty of ORS and fluids, eat simple food such as rice, curd, khichdi and bananas, avoid milk, oily and spicy food, and maintain strict hand and water hygiene. Go to hospital promptly if there is blood in stool, high fever, persistent vomiting, severe abdominal pain or signs of dehydration. You are welcome to consult me on Practo or at Synergy Multispeciality Hospital, Miraj.
Health Tips
See a doctor urgently if there is blood or mucus in the stool, high fever, persistent vomiting, severe abdominal pain, very little urine, giddiness or weight loss.