They will also know what drugs are best for the different types of pain affecting the bladder. They may also be able to offer nerve blocks as a method of pain control. Acupuncture has been used for centuries as an effective method of pain control. Some GPs are now trained to practice it. It is available in some areas on the NHS, and may be well worth considering if you are not having any success in controlling your pain.
Endorphins are pain killers that are normally produced by the body in response to pain.
The next time you see you urologist tell them that you are still in pain. Become as knowledgeable as you can about the alternatives. If you do not have an appointment with your urologist for a while, then consider asking for it to be brought forward.