Urinary Problem

Patient: Hello, I am currently 21 years old and consider myself to be healthy. About a month ago I began having symptoms of prostatitis. I felt a fullness between my scrotum and Anus. I started to drink Cranberry Juice and in a couple weeks i was better. However, following the problem i felt constipated so i took some Milk of Magnesia and it helped me, but then i started having diarrhea, but about a week later all symptoms went away. Shortly after i thought i was better i started having a burning feeling after urination. Now my urethra feels very tender or sore and after i urinate my urethra has a burning sensation and also my stool is mixed between solid and liquid. I know my symptoms are very spread out, but over the course of the past month thats what has occurred.