Watery stool and indigestion. Movements.

For past 4 days i am having diarrhoea or maybe loose motions i am passing watery stool most of the time and sometimes its just liquid Although i am hydrating myself regularly but still i am loosing my appetite or whenever i eat anything it feels like i have to go bathroom. For couple of nights i had fever or my body temperature was high for couple of hours but in day everything seems fine and sometimes i feels pain in lower abdomen. I had a outside food on last Friday since then i am facing this problem. I am not loosing my breath i can do little workout and i am working as well only this indigestion is giving me tension whether i am having Covid or not. I am in my home isolation with no one to come up in my physical contacts and my oxygen level is also above 95 % most of the time. Kindly suggest me which medication should i take to improve my digestion and stop this watery bowl movements.