Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, we should first rule out heart related diseases because headache, palpitations, breathlessness etc are commonly seen with heart diseases.
So get done blood pressure monitoring, ecg, 2d echo and
stress test (trade mill test).
If all these are normal then no need to worry for heart diseases.
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 but first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.