Fever with body pain and a couple of loose motions is often due to a mild infection or stomach upset and can usually be managed with simple care. Take adequate rest, drink plenty of fluids like water, ORS, coconut water, or soups to stay hydrated, and eat light foods such as rice, banana, and khichdi while avoiding oily or spicy meals. You can take Paracetamol for fever and body pain as per the recommended dose, and consider a probiotic if advised by your doctor. Avoid self-medicating with antibiotics. If you develop frequent loose motions, high fever, vomiting, dehydration, or if symptoms do not improve within 2-3 days, consult a doctor promptly for proper evaluation and treatment.