Lay across your bed with your head hanging over the edge. Bring yout head level with your body (looking at the ceiling.)
Slowly turn your head to the right so you are looking at your right hand side (for me, the bottom edge of the bed,) Slowly bring your head back to center looking at the ceiling again.
Repeat by turning your head to the left (for me the wall that the head of the bed is against) and slowly bring it back to the center looking at the ceiling again.
Sit up slowly. Vertigo may have disappeared. If not, repeat this process. Its the crystals in your inner ear that will eventually fall back into place and you will be OK.
Vertigo hit me coming out of church one day and another couple had to take me home and get me back to bed.
Now that is fascinating. Thanks for posting.
It all has to be done very slowly.