From what I understand from my wife, who has a PhD in Nursing, is that it mutates very quickly, and each mutation is weaker then the previous version. Kind of like the flu, but not as bad. Every year the flu burns out after making the rounds, then wakes up the next year and a new version starts the process all over again. The flu shot is based on where it starts up again, and what they know about it at that time. This is a big reason the flu shot has such a low success rate. Covid is unlike anything else, it mutates almost daily. Versions and the effects change as quickly as it mutates.
My current symptoms are fatigue, shortness of breath if I do anything, brain fog, and a bit of stomach issues. Nothing severe, it's just hard to do anything. This is almost exactly what I had last year, but it was more pronounced and I slept through most of the day. This time, I'm awake, and killing time with super long posts on here just to kill the time, but otherwise, ok. My wife has similar symptoms, but not as bad. She also has Lupus and she takes Hydrox for it. She had colon cancer 5 years ago, she's had Covid three times before just like I have, and her White Blood Cell count is almost dangerously low, but slowly getting better every year. She should be a lot sicker then I am, but we believe that the Hydrox makes a big difference for her. What's funny, is that since Covid came out, neither of us have gotten a cold or the flu. Since all the info came out about the vaccine, she no longer gets the flu shot. I've never gotten the flu shot, and I've only had the flu once. The second my wife thought that I had the flu, she talked me into going to my doctor and getting a prescription for Tamiflu. That took care of it quickly!!!
All I can do is wait it out. If I try to get back to work, or do too much around the house, I just extend how long it will last. Since it's so mild now, there isn't even medicine to take to treat it. Just lots of rest, lots of fluids and maybe some vitamins will help.