@bsheahan
We on MCC can give you our experiences and provide inspirations. I hope what I post stays with that as sometimes hard to know what to post.

My wife was diagnosed with anxiety/panic disorder many years ago. When stess builds up or there is a serious issues with family or life she can have a anxiety/panic disorder. Her symptoms mirror yours. She takes medication for it but for her her anxiety/panic disorders still happen with stress and anxiety.

I mentioned this because I too several years back was diagnosed with PTSD with anxiety/panic disorder. It came after tremendous stress of dealing with past issue (like Vietnam, police career, and being shocked 5 times in 24 hours by my ICD/Pacemaker). I too had symptoms like yours. When I was diagnosed thought I was having heart attack, shaking, high pulse, etc.

I mentioned this not as a medical diagnosis but thinking back after COVID and then taking care of father-in-law were you under a lot of stress and continue to be under a lot of stress and anxiety? Stress causes (per my Mayo psychiatrist) adrenaline to come into body to do "Flight or Fight." That adrenaline builds up over time and you can get a anxiety/panic attack with symptoms much like mine, my wifes, and yours.

Consider talking to your medical providers if this could be a cause. It can't help explore it as a possibility. At least can mark it off as a possible cause and continue to seek other causes.

My wife and I both had Covid. I had it only one time in 2024 after taking all 8 immunizations and boosters. Mine was terrible and then went into sinus infection then to bronchial infection. I was diagnosed with PTSD anxiety/panic disorder years before I got COVID. I take medications that helps me deal with anxiety, depression. I am sure it help me deal with the disease and infections that kept me down for 3 months.

The signs you mentioned are same physical and psychological smyptoms both my wife and I have felt and it is very scary.

COVID I am reading can affect many people differently. As time goes on and more studies are done I am sure long term affects of COVID are really going to show it's impact on many causes of physical and psychological conditions.