If you have only neck pain, there is no chance that you have fibromyalgia. Fibromyalgia comes with whole body pain, upset stomach, headache and many more things. Most of the times fibromyalgia is misdiagnosed. U may likely have muscular pain. Have you ever checked your
vitamin levels? If trigger point injection had helped you, you may get benefit from dry needling followed by physiotherapy. Visit nearby pain specialist. You will get answer.