Car Trouble

While driving to get dinner tonight my car stalled on me 3 times. Yuck! I've had problems with it before and over the summer I took it in because it kept doing this thing where it was almost stalling. At that time they couldn't find anything wrong with it. Let me back up. At the time I didn't NEED my car they couldn't find anything wrong with it.
I'm nervous about driving to school tomorrow in stop and go traffic... so it looks like I'll be hitching rides and paying for the trolley over the next couple of days while my car is HOPEFULLY being fixed! Man, I really hope it's not a huge problem. I still have to drive home on Friday so I can go visit my grandma for her birthday!