Feeling overwhelmed by everything!

Recently, I had tested positive for corona virus,my rtpcr report said ct value-20, and i had no symptoms but after a month I started having anxiety and strange thoughts and palpitations with it, and then I became more after of my bodily functions like aware of each and every breath and my heart beat even if my pulse rate is slow but i can still feel it and then I slowly started getting overwhelm by it and then even when I am lying and then I had a very strange thought and i started questioning my existence I thought of every thing as a vulnerability such as a heart beat and nose breathing and many more to a extent that i almost lost control, I never had this before I ve had anxiety but never with these thoughts and i never ever felt overwhelmed or feared my heartbeat , I don't understand anything, I don't know if I will be normal again. It seems as everything had changed and i used to enjoy everything even my high heart rate but now I even fear walking and running and doing everything.