Hi, fluffygirl, and welcome. I have what is known as costochondritis. It does cause chest pain but I don't get the pain in my arms or in my jaw. You said your doctor ran tests but I don't understand why he would want you to take nitroglycerin for this. I know I would want to totally understand that. But, if you are still concerned, you should get a second opinion.
Be sure to check out the Fibro 101 thread...the first thread on the forum. There are links to good info about fibro and there is a link all about costochondritis there. You might want to read that.
I'm so glad you found us and joined in. Let us know what you find out. I hope to hear more from you soon.
Forum Moderator/ Fibromyalgia
Fibromyalgia, Crohn's Disease, Ostomy, Diabetes, Autoimmune Inner Ear Disease, Osteoporosis
God does not give us a spirit of fear, but of power and of love and of a sound mind. 2 Timothy 1:7