Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, we should first rule out brain pathology for your symptoms.
So get done blood pressure monitoring and MRI brain.
If both these are normal then no need to worry for
stroke or other brain pathology.
In teenage, undiagnosed
stress and
anxiety can also cause similar symptoms.
So
consult psychiatrist and get done
counselling sessions. Try to identify stressor in your life and start working on its solution.
You may need anxiolytic drugs too.
Don't worry, you will be alright with all these.
Avoid stress and tension, be relax and calm.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.