I experienced the same thing after my daVinci. I had no issues until 3 weeks out when suddenly I started passing the small blood clots. I knew what they were but was concerned they suddenly started so far from surgery. I called the nurse help-line (for the surgeon) to see if it was normal. I was told it was not the norm but was fairly common and not to worry about
it unless the clots became large enough to block the urethra or if bleeding increased. The clots stopped a few days later.
If you get overly concerned call your medical professional.
Best of luck.