Ask your public defender; that is what he or she was appointed for. They handle that sort of a situation every day.
Answers are based upon information provided by the writer. An in-depth response can only be based upon by consulation with a licensed attorney practicing in the area the questions concerns.
If your deferred sentence was already revoked the court should have made your probation statuts clear at the time the 30 day sentence was imposed. If, however, you you are uncertain, go to the front counter at the courthouse and ask a clerk. He or she will be able to answer that question.
That being said, it is unlikely that supervised probation would be ordered unless you are in an active treatment program. And if it was ordred, the judge would have told you to report to probation within a short period after your release from custody.
I agree with Mr. Blair that the terms of your probation should have been made clear to you. Since this is probably a District or Municipal Court matter, "active" probation, in many jurisdictions, is typically ordered when treatment of some sort still needs to be monitored. But like many of the other answers indicate, you should contact your attorney immeidately and get to the bottom of this. You certainly don't want to be missing any probation appointments.