Now whats this ?

I have gone through many weird kind of suffering. Its early morning right now and before one hour or so as i was sleeping i heard a loud boom in my brain (sound of a bomb going off) and then for few seconds i became paralyzed, i couldn't move my hands, legs, neck etc. Then again as i tried to sleep i heard a loud boom not from my ears but inside my brain, i could feel it and again for few seconds i became paralyzed. It happened to me for 4 times and i got up finally. It is so weird, and its something new. It never happened to me before but since one hour ago.