Neck problems and heat

[Catrin]

I know I am not the only one here with a jacked neck. It's never been right since the mountain bike crash and there are good reasons for that. Last night it was hurting a bit more than usual so I applied heat to it via a "seed corn pillow" that I heat up in the microwave and went to sleep with it under my neck in bed. This morning I woke up and I had more pain and stiffness than ever. So stiff that I was afraid it would impact my driving (from not being able to look at the side-view mirrors), and I took a half-day off work and did the exercises my PT gave me a couple years back. It was fine, well as fine as it ever gets, by noon. I also made an appointment with my Osteopath so he can check out my neck/shoulder just to be safe.

I may have slept on it wrong, or it may have been delayed reaction of my neck to something we did in group Tuesday. Or both. Is it possible that sleeping on a heat source isn't good?