10 months after rad hyster for cervical cancer abdom pain, tenderness, swelling, and slow bowels. 25 radiation treat. No urge to urinate since surgery?

Abdominal pain. You may need to be evaluated for possibiliy of urinary retention. During radical surgery sometimes the pelvic nerves can be injured causing nerve damage to your bladder. A bladder u/s after voiding may help determine the cause of your pain.
Room for bladder. After the uterus has been removed, there is more room for the bladder to expand. The presence of a uterus is one of the reasons that women stereotypically have to urinate more often than men do. If you ever go more than six hours without urinating, though, or if you ever feel that your bladder is full, but can't empty it, that is a medical emergency.