Petty Theft In Wisconsin

I was recently caught in Wisconsin for taking money from my employer.
-I was fired.
-They told me I was cooperative when they interviewed me/questioned me about the incident.
- I admitted to taking about $150 in cash/merchandise from the store. Although it was never more than a maximum of $10 at a time.
- I already agreed to pay the fine (when decided) along with restitution to the company.
-When they called in the Sheriff, he wrote me a citation for petty theft with a court date. Although they did not arrest me or "escort" me off site.
-this is my first offense for anything like this (I have a clean record)

I did write a "confession" (I guess you could call it), saying what I admitted to and that they did not harass or threaten me in any way.

Needless to day I am worried about this. I didn't even consider what could happen before I started doing this. I did apologize with the managers and like I said I was very cooperative with LP/Managers/sheriff. But I want to know what i should do from here. Should I be worried about going to jail? or is that a little too much to expect for something like petty theft? Also, should I try to find a public defender, or is this almost too small of a case for something like this?

Thanks to anyone that can help!!!

'When they called in the Sheriff, he wrote me a citation for petty theft with a court date. Although they did not arrest me or "escort" me off site.'

You were techinically arrested. They chose to let you sign the citation in lieu of being booked into the jail and being required to post bond. The Deputy decided you were not a flight risk and would appear for your court date.

You need to seek advice from an attorney.