Get checked for Reynauds syndrome. If not, it appears ur body is having a hard time regulating ur temp, too. Exercise is good too, as it moves the blood around to all extremeties.
Do u live in cold weather, keep ur home very warm.
I also suffer from Reynauds but have had it b4 the covid outbreak. I live in South Fl but when there is a cold snap I also wear sweat socks on my ft & hands to keep warm inside my house. It hurts.
It is somex hereditary. My dad & daughter have it, too.
I don't think they know all of the ramifications of long covid yet. They say the vaccinations minimize ur chances of long covid. Being a nurse & understanding the medical literature i agree w/ them.
Good luck!