Thanks for posting your query.
With the available described details, there could also be possibility of acute viral gastroenteritis
(muscle ache ) is an integral prodromal symptom of viral infection.
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
You should also go for complete blood count
imaging, and serum electrolytes, renal function test.
You should take complete antibiotic therapy, antispasmodics, probiotics, antipyretics, if needed.
You should also take analgesics along with muscle relaxants.
You should maintain your hydration status by taking potassium rich liquids.
Take soft diet
along with yogurt and banana.
Avoid milk and all milk related products. You should avoid Imodium as it may cause stasis of infection in your intestine.
Dr. Mayank Bhargava