Welcome to AF Megan ,
To bad you had not posted here earlier be fore blowing 4 Grand on trany. Could have got it rebuilt Alot cheaper unless casing was broke, a lot of people would here would have pointed that out ,or at least you could have got a used one from a boneyard .....oh well. You should never have to do it again .............LOL. Have your Dad go with you and take it to Autozone and get it scanned for free. Taking Dad with you will help insure that they won`t try to B.S you with him standing there. Get your codes read and post back here someone will help you out . BTW has the car had a tune-up that you know of ? Spark plugs, plug wires , fuel and air filters .....