I am 21 years old and have had stones for about 5 years now. I recently had a CT scan after passing my 3rd stone (the first was surgically removed) that showed I had 2 more stones in each kidney, roughly 1-2 mm each. I was recently perscribed Nifedipine in hopes to cause my stones to pass, even though they are still in my kidneys. I was also perscribed Vicodin for pain that will follow if they do pass. I have normal blood pressure, and am just worried that this will significantly lower my blood pressure to the point where I cannot do daily activity such as riding my bike to work, getting out of my loft bed, etc. Am I just being a worry wart or should I stay concerned?