I know its been a while. Feeling for your situation I wanted to write and tell you my dr found I was having chronic kidney infections and I have to retrain my bladder when voiding. She said most woman arent’ taught to diagphramatic breathing whiles tryin to go and retrain the bladder. Breath in deeply thru the nose extending the stomach then try to go while exhaling and keep repeating until positive results. I thought she was nuts. Breathing? oh my goodness. She is right. There is a medical term for it but in the end proper retraining this type of retention (we hold a lot of tension in our muscles) so this loosens them up to be able to go. I hope this helps you. I know you are coping with a very serious condition. I’m just hoping what my dr found can help you too.