When I had my first child 16 years ago, he literally came shooting out like a rocket...all 10+ pounds of him...and tore me to shreds. As a result, I have had stress incontinence where I leak (sometimes substantially) when I sneeze, cough or jump. I have never connected my incontinence with any dire illness or disease because this one is totally clear. I saw a urologist a few years back and he asked about when this all started and I gave him my son's birthday! No mystery there!
As for treatment, I was going to have the mesh surgery and my mom (a nurse) talked me out of it...good thing, too, since there have been many serious side effects of that surgery. So I try to manage it in a number of ways. First of all, I lost weight. Extra weight definitely makes stress incontinence worse. Second, I always wear an incontinence pad whenever I walk the dog, play tennis...anything strenuous. These are not the period pads..they are specially made for this. Another thing that was recommended to me by a gynecologist is to wear a tampon AND a pad when doing anything physically active. He said the tampon kind of helps things stay where they are supposed to be. Finally, I try to keep things in perspective...I've got 2 wonderfully kind, generous kids...so what if I leak a bit now and again? I've learned how to manage it pretty well.
As for the retaining urine...my dad had this a few years ago and you would know by now if it was something serious. In addition to retaining urine, he was in agonizing pain. He spent one night in the hospital (no surgery) and after some heavy duty antibiotics he was a new man...actually better now than before.
You have nothing to worry about...enjoy those beautiful babies!!