Don't panic. You have options to get another one.
The Florida Department of Health says you should start by returning to the
place where you got your vaccine, if the site is still open. They should be
able to look you up by name and date of birth. If they have your shots
recorded, they can give you a replacement card.
If you can't get a new card from your vaccination site, the CDC says you'll
need to call your state's Department of Health. They have records of most
vaccinations through their immunization information system (IIS). In Florida,
that number is 877-888-7468.
Some counties are also able to process requests for new cards.
Smart safeguards include taking a photo or scanning both sides of your card and
perhaps emailing it to yourself.
I’ve heard that Office Depot and Staples are both laminating vax cards for
free, possibly with a required coupon. Wait until after the second shot, if
required, is recorded.
Hope you’re all safe and well!