I can still think of no way that properly prepared and administered Colloidal Silver can cause bleeding. Normally, blood in the urine manifests during a bladder infection, not after one has been eliminated. If the blood is no longer present, probably nothing to worry about - but if it returns, then please let us know.
It is pretty much impossible to take too much properly prepared Colloidal Silver over the short term - unless perhaps you were drinking gallons a day. That is especially true of the weak Sovereign Silver that is normally found at Vitamin Shoppe. They have a great sales team and publicity, but an iinferior product. But it should work OK for something like a bladder infection and as a matter of fact you should take a goodly amount of it for such things, given that it is not all that powerful compared to superior Colloidal Silver products, especially true colloidal silver (like the vast majority of products that call themselves colloidal silver, Sovereign Silver is actually mostly ionic silver).
One bit of advice: when you have taken a lot of colloidal silver ore else taken colloidal silver for a number of days, it is a very good idea to take a good probiotic supplement to help restore gut flora to healthy levels.