I already had Covid, probably the original variant, no mutant. No symptoms at all, was in psych ward that time. contracted the virii there and was locked into a room with TV and slow internet for 10 days but nothing happened, at first I was a bit afraid yet really nothing. No fever either. Don't know about false positive, they confirmed the test and it came back positive.
So I should be immune for now. Don't know whether this immunity extends to mutations, I guess it's a bit of biological Russian roulette but in general I should be protected for some time. How long isn't known yet, last time I looked they said 9+ months. These'd be over soon. I could get Pfizer shot here but as my gf was really sick (got China though) after the shot and had lingering symptoms for quite long, I am thinking about whether for me the vaccine might be worse than the virus itself...