My question involves criminal law for the state of: California

I am extremely ashamed to say that today I totally blew it...I stole groceries from my local Alberstons. Upon exiting the building I was followed by a woman who immediately wrote down my license plate number. After witnessing her do so, I took all the food back into the store and left it there. I managed to slip in and drop it off in an isle before leaving.

This incident in itself would not arouse too much worry if it weren't for the fact that I have been slipping in and out of this Alberstons for months without paying for anything. I am sure
they have surveillance footage of me doing it multiple times if they decided to look for it.

What am I dealing with, what should I know, and how should I prepare?

Thank you so much in advance for your advise. I sincerely appreciate it with the warmest regards.