Can your DD get you a bedside commode? Would you be able to hop over to it? I hate the fact that you're having this trouble, and I don't think you should be alone...I hope your doc or DD can find some help for you, sweetie.
And there are pants that you can buy to put a pad in that are somewhat waterproof...but you can always have DD get some Depends until you're up and about. That would be more comfortable than pads...
Take care, and know that our prayers are with you for a speedy healing of your leg...