I had 47 gold bars when I played this morning, not I only have 38.

Hello @lguteriez Hope you are finding your way in the Community  

What game did you have this issue in?  This category belongs to the "Candy Friends" game.... I can request the Community Team to move this discussion to the correct game category if you are having this issue in a different game   

So, with regards to the missing Gold Bars -- it is exactly 9 Gold Bars, which is the price for 5 extra Lives!!  You must have accidentally pressed on "Buy" and did not realized you did that, and closed the game!!  I did that so many times and lost too many Gold Bars    

To get back your Gold Bars back, you will have to contact the "Player Support Team" -- scroll all the way on this page, and tap on "Contact Us" button, located underneath the King Emblem.

Here is an Idea that I have suggested to request to the King Team to bring in "Confirm" button, before we purchase anything with our Gold Bars!!  Please go to this below link and "Vote-Up", because the more votes an Idea receives, the better chances for the Idea to be implemented!!  
https://community.king.com/en/candy-crush-friends-saga/discussion/246965/please-add-a-confirm-button-to-use-gold-bars-purchase 

Please post back and let me know if you need further assistance or clarification  

Hope you will receive your Gold Bars back.  Have a nice day/evening!