Alimony or spousal support in Florida is awarded on a case-by-case basis. In determining whether alimony is granted, the court will take into consideration all relevant economic factors, including but not limited to:
(1) The standard of living established while married;
(2) The length of the marriage;
(3) The age and health of each party;
(4) The financial resources and assets of each party;
(5) The time necessary for either party to acquire sufficient education or training to enable such party to find appropriate employment;
(6) The contribution of each party to the marriage, including, but not limited to, services rendered in homemaking, child care, education, and career building of the other party;
(7) All sources of income available to either party.
The court may consider any other factor necessary to do equity and justice between the parties. The court may also consider marital fault in determining whether to grant alimony. This means that if one spouse is responsible for the breakup of the marriage, the court can take this into consideration in awarding alimony to the other spouse. This is especially the case if adultery is involved.
In your particular situation, I think it would be very likely that the court would take into consideration the fact that you are disabled/have many health issues and thus are unable to work and award you some amount of alimony. How much this would be is very hard to tell since, as I indicated, it depends on all the economic factors listed above. You also mentioned that your husband has been cheating. And this is another strong factor in your favor in whether alimony will be awarded.
Since you are considering filing for divorce, you might want to become a little familiar with some basics of all of Florida's divorce laws. So I recommend that you read all of the information on This Page, which covers the basics.
Good luck to you.