Story starts in the beginning of a first covid wave. Sitting in the apt, stacked food and all necesities, I didn’t ignore the situation. But, over time, started feeling increasingly anxious. On 22nd March (2020), we had an earthquate, that threw me out of bed. Rushed out, and stayed away from the crowd because of a covid. Half an hour later, came back to the apt to get a warmer jacket, when another earthquake hit. 
Later, started to pack my things to move out from the city, when at one moment, I felt a rush of tiredness that swept me. I was unable to leave the apt because of that. No, that was not a drop in sugar level. Called the relatives, and they said they would put me in a separate room, because of a covid. I decided not to go, because I do not want to be anywhere where I am not wanted. 

Next day, woke up (not to mention constant trembling through eash night that followed), and felt my mind was scattered. Something happened, serious. Tried to get online to read the news, but strong anxiety prevented me from doing this. Anything that I would feel as stressful, I was unable to read or listen. 
Checked some numbers that I do regularly, but didnt understand them. I have lost ability to understand connections between them. Decided I have to do something, but couldn’t make a decision. I understoon my ability to make plans and decision is severely deteriorated, if not gone. Decided to make a call to talk about this, but I was unable to stop them from talking about covid and earthqueake, before I started getting like electric shocks from my brain that prevented me from talking and even moving my arms. I started to lose control. Strong depression along with agression appeared from some deep corrner of my mind, and was about to take control. I understood my mind started to crack under the whole pressure. It was not fight or flight response anymore, but freeze. 
I wasnted to make another call, but as soon as it started, I fel like something cracked in my head, and I am losing contact with reality. I was unable to chose another number to. call for help, because I didnt comprehend contacts in my Phonebook. I was aware only of a world within my visible range. No future, no past, no abstract items. 

I have “recovered” after some time, but became a different person. Impulsive, from smartest guy in the room, became the most stupid. Called a doc, but she dismissed it, as we are all anxious in those times, and I could get some diazepam. I never took any such pills before, nor have history of it, nor mental issues in my past.

A year later I was able to reach another doc, who sent me to a psychiatrist. This. One was even worse. While being the only patient at that moment, she had no patience to listen to me for more than 2 mins. She asked my why I am here,, and I concluded - me neither, but same conclusion came from another reason. 
A few days ago, started feeling light headedness, which I. felt few times in the Past year. Each time I would start to have a discussion, like my head would fall down.  This time, I was at home, and was able to check my pulse and blood pressure. Note that I was always healthy, no hear issues,, no high blood pressure, used to be engaged in sport activities. My pulse was low, but my blood pressure would fall to 117/40 with pulse 35, but I would feel dizziness in my head like I am going to Pass out. After 20 mins,, the situation aggravated, and pressure started going up, reacing 215/195 at one moment, with a tingling sensation in my both hands and a feeling of a panic.

Went to an emergency, took a while, and said that I feel fine at that moment. But they told me that they see afib on their monitors with a pulse 140-150. I received 2 doses of diazepam and concor before it went to a normal levels. I was told that my pulse never went to 35, but my meter was actually unable to detect it, because tachycardia is badly detected on home blood meters. 

Do I feel anxiety in my daily life? Yes, fore sure, but no pannic attacks.
Feel free to comment

Edit: I use levothyroxine 88, and my tsh, ft4 are stable