I was suppost to report Tuesday and had no way and I called and told my probation officer. What do I need to do and what's the worst that could happen

What are you on probation for ?

How long have you been on probation ?

What did your PO say when you told them?

You need to be sure there is a way to get there from now on?

Worst they can do, Revoke your probation, lock you up till you go back to a hearing before a judge. ** doubt it will happen, but that is the worst that could.

I am on probation for 2 counts of theft by taken felony (first offender) I been on probation since December 2010. He told me I needed to come see him and I was arrested last month for felony possession of a firearm and my case is still pending

You could go to jail for violation of probation, ordered to serve the jail time you WOULD have received if probation had not been granted. (Felony possession of a firearm? Sounds like you will be sentenced to jail on that charge alone.)

Did you inform your PO immediately of the new charges? If not right there is a violaiton of your present probation. Like JKT above said you'll be doing some jailtime as felons are not supposed to own or possess any sort of firearm.