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I think the problem is BPPV(Benign Paroxysmal Positional Vertigo
BPPV is a problem of the inner ear
where we have the balance Center .The symptoms are --spinning of the surrounding on charming the position of head,nausea,Vomiting
Seek emergency care if it is associated with severe headache
,raised BP,imbalance on sitting,vision abnormality or weakness of some part of the body.
BPPV can be treated with vestibular sedatives .
There are some exercises which you can do to avoid the recurrence of the symptoms.