I'm very sorry for your difficulties. It must be extra shitty considering that our society could have locked down for a month and not done this. I've heard that Paxlovid helps with long-COVID, but I can't see it doing much for headaches. 
The reason I'm so damn strict about precautions is that I know that I'm just one infection away from everyone gaslighting and diminishing my real shit major health issues, as we all know that humans like to do. I have no faith in society or most of my social connections giving a fuck about me after losing my health and/or job.
Sorry again for what you have to go through. I fucking hate how we love to blame and burden the victim.