 [ Symptoms ] i have stomach issues since july with no relief i now have fever and diarrhea [ Disease ] light headedness and weakness are occuring due to a low immunity you have to take multivitamins to boost up the immunity having diarrhoea and fever are an indication of diarrhoea e coli vibrio cholerae are the ones that need to be more worried about food and water hygiene is the most important factor drink plenty of water maintain hydration