Spinning sensation when lying down.

A week back, I had a severe head ache while sleeping. Morning when I woke up, my head was very heavy with head ache and to any side I turn, I was experiencing spinning sensation for few seconds. I took calpol and got better. After that, I am experiencing spinning occasionally when I bend my head down. But, having that feeling daily when I lie in bed for few seconds and turn my head to other side when sleeping. I can feel flum in my throat and I am swallowing it every time. Is this Sinus or Vertigo? Can this go away on its own? I didn't sleep well last week as we shifted home. Does this go away if I take rest? Two weeks back, I did a complete master health check up and everything is normal. I am doing eye exercises to see if this would reduce. Pls suggest doctor.