While it's POSSIBLE to still test positive up to 90 days after your infection (particularly with a PCR test), it's not PROBABLE that you'll test positive after you've recovered.   Vast majority of people test negative with an antigen test after recovery.  And cruise ships accept antigen tests for all vaccinated passengers.   If you're concerned about it, take one of the freebie home tests a week or two after you have recovered.  Then you can ease your mind about potentially testing positiv
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