In a discogram test a dye is injected into your spinal area and an x-ray is taken. The dye increases the resolution of the x-ray thus enabling your physician to get a better idea of what's happening in your spine. Electromyogran and nerve conduction studies determine how well your nerves are functioning when they're at rest and when they're active. They are used to help physicians determine if you have a nerve or muscle disorder that could be causing your longstanding pain.
You're taking a variety of different medications. If you're concerned about whether they may be interacting together in a negative way or about side effects you might want to contact your pharmacist.
You can find out more about the wide array of pain treatments available by clicking on the URL below.
http://www.healthcentral.com/chronic-pain/alternative-pain-relief.html
Given your lack of success with prescription drug treatments you might want check alternative treatments for pain. They include such things as acupuncture, relaxation techniques, pool therapy and more. You can find our more on them below and elsewhere on the internet.
http://www.healthcentral.com/chronic-pain/alternative-pain-relief.html
Since chronic pain is a feature of fibromyalgia and you have been diagnosed with fibromyalgia you might want to check the fibromyalgia information below. FM patients do not always respond to standard pain treatments.
http://www.healthcentral.com/chronic-pain/fibromyalgia.html?ic=4018
Good luck!