I would strongly recommend that you see a doctor
. This requires evaluation by your primary care physician.
To state the obvious, the brain is an important and very vital organ. It is comprised of a complicated intricate system of physical and electrical connections -- so even the smallest problem can cause significant troubles. While these symptoms may be caused by something minor, there could be a serious problem that should be evaluated and ruled out.
First, one needs to ensure that there is no traumatic injury
to the brain like a bleed or a stroke. This can be evaluated by your doctor and if necessary by some imaging of the brain.
Another possibility that should be ruled out is if this represents abnormal electrical activity -- or a seizure. This can cause the symptoms you describe and require treatment. Other possibilities include migraines (they aren't always associated with headaches) or inner ear problems. Rarely, infections in the inner ear can cause these problems.
This can very likely be a manifestation of anxiety
or a panic attack. Fortunately these can be treated by your doctor with either medicines you take once a day to prevent this or only when you feel this.
Talk to your doctor -- evaluation and potential treatment should be done. Good luck!