Hi. Thanks for your query. Noted the history and understood your concerns. Diarrhea all the day means there is a problem in intestines but having beetle like insect in stool is impossible although you have had muscles at dinner. I would advise you the following: Get the stool tested. Consult your Doctor for clinical evaluation and any further tests to get a probable diagnosis and proper management with an antibiotic and probiotics. Use only boiled and cooled water; use homemade fresh foods only. Plenty of oral fluids to avoid dehydration. Do not worry about the beetle as no one can eat the beetle as such and hence not possible that it is through diet. It is possible that it is present in the toilet from the beginning.