Hmmm you might also want to consider the possiblity of Interstitial Cystitis, with the frequency issues. Most the time this accompanied by pelvic pain or for men pain
the groin etc. but I have several IC patients that only initially had frequency and seeing your bladder weakened at such a young age makes me wonder.
I would be glad to send you info on IC links etc. so you can discuss it with your doctor.
We also have an IC support forum here on this site actually two, listed below.
http://www.medhelp.org/forums/Interstitial-Cystitis-IC--Pelvic-Pain-Support-Forum/show/412
The expert forum where you can actually ask the doctor here on Medhelp is here also:
http://www.medhelp.org/forums/Interstitial-Cystitis-/show/264
Hope you find a solutions soon!
Shelly