I am 33 years old, and I have noticed lately that whenever I lay on my stomach and maybe prop my head up while maybe watching a movie or just try to lay comfortably that way my head starts to feel funny..there is no pain but a pressure and throbbing until I sit up and it lasts for a few seconds and then goes away, I have not thought anything of it much but today I was just sitting normal and when I got up to walk it did the same thing, again no pain just weird throbbing and pressure and I feel funny..it again did not last long, could you tell me what this may be? Thank you!