let me explain like this.
Dizziness reasons are.
Labrinthitis(unilateral or bilateral/otitis)inshort inflamation in ears,
Hypoglycemia(low blood glucose)
according to the description given by you i think the cause of dizziness can be:
Benign positional vertigo (BPV)-or simply vertigo-is a disorder of the inner ear(inernal ear infections)please note sometime ear infections are asymptomatic(ie without symptoms).
second cause can be Orthostatic hypotension - also called postural hypotension -when you stand up too quickly or have eaten a heavy meal, you may feel dizzy. This is because blood pressure has fallen sharply.
another reason can be low glucose in blood(hypoglycemia).
While i give you some advices that might help you at present.
Dont drink coffee ,beverages,alcoholic products.(as they affect circulation)
Drink fruit juices, keep yourself hydrated.
Avoid sudden movements of the body.
Avoid exposure to cold weather.
i hope everything will be fine . but if the problem persist i suggest you to visit your doctor so as to rule out the possible hidden cause(some blood work/imaging studies may be required)