Dear Ben,
I am glad you went to Accident and Emergency with your problem as that was very wise.
I understand your anticipatory anxiety but please try to use your CBT skills to stay grounded. You will be OK so come here and keep posting your progress.
My hubby had Prostate Cancer 3 years ago and had to come home with catheter for a week. He, too, was concerned re what would happen when catheter was removed. He did have some incontinence for several weeks which frustrated him but things did settle back down to normal.
During surgery, anesthesia is often administered to block pain signals, and fluid is given intravenously to compensate for possible blood loss. The combination may result in a full bladder with impaired nerve function. Consequently, many patients have urinary retention after surgery.
I am glad you have confidence in your Doctor and your hospital so keep on believing that this problem will be resolved.
Here for you always and sending you lots of good vibes.
Gentle Hugs
Kitt