Bladder & lower back pain when lying down only. fine when standing. feeling like a have to pee and then can't, but will also pee 2-4 times per night?

Get evaluated. : The combination of back pain a change in urinary habits and frequency could have a neurologic link and should be assessed as soon as possible. Your physician, based on a detailed history, physical exam, and tests may be able to find out if there is a relationship between your symptoms, and ways to improve them. Don't delay and see your physician.