Car troubles........

So my car is starting. But not with out me giving it a couple of gallons of gas. If I turn the key, it makes no sound until I give it a bunch of gas. Then it starts. It sounds angry. Like it's yelling at me,"I was sleeping and you're forcing me to get up and drive"!!!! haha. That's how it sounds to me. So, my car is now sitting at the shop. Luckily, my mother works in the city and takes the train. She let me take her car to work and school tonight.
Now i'm freaking out over how much it might cost. Like anything, it could be a simple problem, or complexed. And the more complexed, the more dinero it will cost. I'll just have to hope for the best. I have to be safe right? I can't be in a position to break down on my way to work in Port Jeff. And the icey weather conditions and sneaking up on me, so my cars reliability is important.