Yes, you can file for divorce in Florida while you're pregnant 

You can use form 12.901(b)(1), Petition For Dissolution of Marriage With Dependent or Minor Child(ren) 

If you are represented by a divorce attorney, he or she will acknowledge in your initial pleading that you are expecting a child

That being said, your divorce will not be final until after the baby is born

The judge may delay the finalization until the baby is born so that it is born to two legal parents. 

Florida is one of many states that have abolished fault as a ground for dissolution of marriage

The only requirement to dissolve a marriage is for one of the parties to prove that the marriage is “irretrievably broken”

Filing for divorce while you are still pregnant may save your emotional stability or even life by distancing you from your spouse. 

If you want to know about its entire process in detail then click on the link given below.