I have severe pain and muscle spasms, is it fibromyalgia?

I have severe pain and muscle spasms with a drop in barometer pressure. Then when pressure returns to close to normal my body is sore and still spasms. I have been told I have fibromyalgia. I do have pain on a every day basis and migraines. I just can’t emphasize enough on how much pain I am in when pressure drops or with wind. Dr’s look at me like “oh really “. I’m seriously getting so distraught. I can barely function. I’m a RN and love my job but I’m coming to the conclusion it’s really effecting my job. All I can do is work ( and that’s every day struggle, sometimes I cry on the way home because I’m so tired and in pain). I take all the meds related to Fibromyalgia and still no relief. Blood work shows no inflammatory problems. Dr ‘s say must be Fibromyalgia. I am just asking if anyone else has any ideas of what could be going on. Thank you. Desperate