Suggest Treatment For Fainting Spells

I am passing out and have gone and found out that it is not my heart. I have gone in and taken a batteries test and came out clean . I do have Fibromyaliga and take lot of meds for pain and not able to find our if it could be one of my meds. I also take Lyrica, Serqueal,Percert, Zanflex, After taking the test for my heart it is not that. But passing out has been going on for about 9 months. Were do I go now????