If you curse or abuse another person or use violent abusive language to another concerning that person or any of that person’s family or otherwise use such language, and such language is reasonably calculated to provoke a breach of the peace, you can be found guilty of a Class 3 misdemeanor. It’s a Class 1 misdemeanor if you communicate obscene, …

Yes.

Be aware that, whatever your fines and costs are, interest is added to unpaid amounts as time goes by. Options the courts have if you do not pay include unsuspending all or a part of your suspended sentence(s), and if you are on probation, your nonpayment can be considered a probation violation as well.