I HAD MY HEB A AND B IN January 2014,

I HAD MY HEB A AND B IN January 2014, BUT DID NOT RETURN FOR THE BOOSTER AS MY DOCTOR DID NOT TELL ME I HAD TO. HE SAID IF WE WERE GOING TO TRAVEL MUCH TO HAVE IT AS THEN WE WOULD BE GOOD FOR LIFE. WE NEVER INTENDED TO TRAVEL AGAIN, SOOO, NOW WE HAVE BEEN ASKED TO GO TO CUBA FOR A WEDDING IN THE NEXT 1 1/2 WEEKS, WHAT DO I DO?