Although you may not feel that you have an underlying bladder or urination problem, in actuality you do. Bladder stones occur as a result of bladder outlet obstruction, or incomplete emptying of the bladder. Although there are several causes of incomplete emptying, the most common would be a prostate that is causing an obstruction of the opening of the bladder. This type of obstruction would lead to residual urine that would remain in the bladder after you have voided. It is this urine that serves as a nidus for the stone formation and helps the stones to continue to grow. The Uroxatrol that you were prescribed should help with your emptying of the bladder. Many of the symptoms that you are describing should dissipate with additional time, and the Uroxatrol should help speed up your return to your baseline. Lastly, the PSA of .4 is normal and would be associated with an extremely low risk of co-existant prostate cancer, providing that you have a normal rectal exam.