I use a rice bag and heat it in the microwave. I couldn't live without it.

I keep a heating pad on the back of my recliner...

Two items essential for us with Fibro!!

I have a heating pad on my lazy boy at all times. On my tummy now. You're right, it does help.

Yes it comes on quickly and can be quite severe. It takes a long time to improve which can be very frustrating. I am glad to hear others have experienced this as well because it can make you think you have a more serious medical issue when you really don't. Thanks for the info re the trigger point injections.I plan to ask my Dr about them.