Hi, guys! When I do exercises, on AH vowel and smoothly go into the head, I start to feel pain in the upper part of the throat, just over an adam's apple. It doesn't hurt when I go into the head on a lip roll and tongue exercise, it's only when I open the mouth. Transition into the head goes pretty much smoothly, without any break, when I do it light and not too loud.
I checked my diaphragm, tried to relax the throat, but again - as soon as I go into the head voice, I start to feel pain. I don't feel pain when I sing in chest, when I belt. It's only the head voice problem.