While I was falling asleep and this feeling even woke me up from sleep I felt as if i was floating. . like my head was floating and felt very very lightheaded and dizzy. . to get out of that feeling i had to open my eyes and kinda wake up but i was sooo tired i needed sleep so i;d fall asleep and i could even feel this in my dreams and felt half awake in my dreams. . This feeling was so scary. Is it that i wasn't getting enough oxygen in my brain?? Thats so scary. I just kept getting it while trying to sleep and its the most uncomfortable feeling ever. My breathing was different too. When I'd get this feeling i checked in with my breathing and I felt like i wasn't breathing or was going to stop breathing. Now my head feels very heavy and sore a little. Why does this crap always happen to me?! Once i get over a symptom i get a new one. But i feel like something is seriously wrong. . like i am not getting enough air or something! has anyone felt this way ever??