Urinary retention on oxybutynin

I started oxybutynin \~2 weeks ago because I was having increasingly worsening urinary leakage through the day, and near complete loss of bladder control. I was also having retention issues, but it wasn’t horrible.

Now that I’m on oxybutynin, I’m not really leaking throughout the day anymore but my retention has gotten a lot worse. I’m having a lot of bladder pain, and am rarely able to get any significant amount of urine out.

Does anyone have any tips for dealing with this while I’m waiting for my next appointment?