All of these symptoms can make you feel anxious no doubt. I had to use my inhaler up to 4 times a day and was on about 3 rounds of prednisone. I rebounded with asthmatic bronchitis. I was exhausted. I would do a little something and then rest. Just walking to the mailbox was exhausting. I felt like I was in slow motion and it was even tiring to think, so I just prayed to God. My doctor told me the shortness of breath, fatigue and chest tightness could last a while from Covid pneumonia and to expect it...he was right. My faith in the Lord, my family, church and friends and much prayer got me through. Also, try to distract your mind when you are feeling overly anxious. I agree, talking is tiring. I know its hard when others don't understand. If you can, do a crossword puzzle, listen to soothing music, watch something on T.V. (if you can find anything decent!), whatever helps you to relax. If you like to read, find a good book to read. You have been through so much and I am so sorry. I will continue to pray for you. Covid is brutal and it takes time and you have had your share of it. Remember, rest is healing with Covid. Take care.