Thanks for your question on Health Care Magic.
I can understand your situation and problem.
In my opinion, you are mostly having
anxiety related symptoms.
Stress and anxiety can also cause menstrual abnormality.
But better to rule out Pulmonary causes for your breathlessness. So get done PFT (Pulmonary Function Test). If this is normal then no need to worry for lung disease. Your all symptoms are due to anxiety.
Better to
consult psychiatrist and get done counseling sessions.
Try to identify stressor in your life and start working on its solution.
You may need anxiolytic drugs too.
So don't worry, you will be alright. Avoid stress and tension,be relax and calm.
Hope I have solved your query.
Wish you good health. Thanks.