As all the others have stated, it is impossible to answer this question without reading your contract. I hope that you read it BEFORE you signed it. If not, go back and read it now.
Some contracts might not have a financial contingency at all. Some state that the buyer has to make a "diligent effort" to arrange financing. You need to read your contract. If you don't understand what it says,seek legal advice.
If, after reading your contract, you believe you are entitled to your deposit back, send a letter demanding the return of your deposit to the person that is holding your deposit. Send this letter by U.S. certified mail. If this person has a Florida real estate license, turn in a complaint to the DBPR if they do not return your deposit. When Mr. Investigator calls them, they will return your deposit if it is supposed to be returned.