I developed PTSD after a coronavirus. It's a very scary thing and should definitely not be started. So I immediately started looking into what it is and what I should do about it. I found very good material here
https://drmental.org/blog/ptsd on the subject and at least figured out what direction I needed to go to get over it. It was the only way I could get out of this creepy condition. I hope it's helpful for you as well.
Hope that you're well now and I think that the link alone would be enough to help you because I believe PTSD needs to have a constant therapy if you want it somewhat treated. I'm happy that I didn't experience this but I still feel bad that some people have to go through with this mental distress which is obviously problematic. To everyone experiencing this kind of problem, don't be afraid consulting a specialist.