Re: neck kink
Massage and a trip to the doctor's office. My husband's neck started out like this and the MRI showed herniated discs. That was no problem until the EMG showed nerve damage. You might want to play it on the safe side.
As for heat, moist heat is the best, such a hot tub or letting the hot water of the shower beat down on your neck. My DO told me, no heat packs. I have no idea why.