Hi dear thanks for your approach, I appreciate that you are looking for a help from us. I am sorry for your situation, I understand how difficult it is to manage your self. Yes, the feeling of scary(un known fear) not sure of reason indicates that you are in the state of anxiety. But it could of your personal or professional life issues. Sometimes if any person having the
thyroid problem, there will be fluctuations in emotions.
It's better you visit the psychologist to get the clarity and cope with the situation. However it is a common problem most of them will experience for different things. Stay positive, take care.
Next Steps
At the earliest try to reach psychologist in your place. I can help you if you are staying in Bangalore.
Health Tips
Please you can start with pranayama(if you are aware), chanting Omkara will also give temporary relief, but try to work on emotions.