Can someone explain to me what the doctors letter is if you have had covid and recovered ? And is this a better way to apply for the ThaiPass

I realise that a PCR is usually required for a flight BUT if you have recently recovered from covid ( I have it now) you cannot get a -ve test result for some months even though you clearly aren’t infectious - that is why theThai government do accept a certificate of recovery as an alternative and you don’t need a PCR test on arrival in this case . My question is will the airlines accept a certificate of recovery too?

Travelling to Thailand on 13 Jan. Thai pass all sorted. Now I have COVID and recovered quickly. I’ve heard now that I will fail PCR test

Anyone know what I can do ?