I've had diarrhea for 3 weeks now and i used amoclan for two days i didn't get better what to do?

See doctor: Persistent diarrhea can be a sign of infection or inflammation in the bowel. Seeing a doctor to have an exam, blood tests and stool studies would be the best thing to sort out what is going on and to develop a treatment plan. Make sure you are drinking lots of water so that you do not get dehydrated. I hope you are feeling better soon.