Welcome to healthcare magic.You must have had Gastroenteritis
.Get your stool for routine tests and culture as well. Start some probiotics(lactobacillus
).Can wait for the culture report to start with antibiotics. Else can start with Ofloxacin
200mg twice daily.But preferably, wait for culture report,it could be of viral origin too.If this has been there for longer duration then needs thorough evaluation at a physicians office.