Did you spend all of your Medical Care FSA funds from 2016?  If not, your unused balance of up to $500 dollars rolled over and is available for use in 2017.  The claim run-out period has ended as of May 1st  which means claims from 2016 are no longer accepted for reimbursement.  As of May 11th your rollover balance has been combined with your 2017 funds and is now available to swipe and spend via your flex spending debit card. 

If you haven't registered your Flex Spending account online yet you can do so by following the link and selecting "New User Registration."  Simply enter the required information and you will then have access to view your account information online.