I have been waking up with spots of blood on my pillow. My wife says I often cough and stop breathing and wake up gasping like I ve been under water for a few minutes. I wake up with headaches and my teeth and jaw are sore. I m about 6 foot, 175 lbs, and have had to ER visits over the last 5 years with a diagnosis of pleurisy . I ve seen doctors, dentists, and sleep specialists, but I haven t had any relief.