Petty theft Consequences for Minors already on probation?

I just got caught stealing 2 worthless shirts.I live in the state of california. I didnt know what i was thinking. Im already on probation with background charges of great bodily injury and violation of probation. Now im getting charged with petty theft-shoplifting.I am only on restitution probation now because ive been doing good for so long and then I did something stupid that i regret. Can any one tell me what exactly do you think they will do in court. The only reason why they let me go is because im 9 months pregnant with diabetes. Now in a month if i go to court, can they detain even if i have a newborn child that I HAVE to feed for her own health. Please...I really need good advice.