Everyone is different as to when you become physically dependent or addicted (and there is a big difference.) You may just be able to stop. Have you talked to your doctor? You could ask him to taper you down slowly. If you do have withdrawal symptoms, look into the substance abuse forum. There are some great tips on how to ease your withdrawal symptoms. But I honestly don't think you'll have a problem if you've been taking them as prescribed. You haven't been on them that long.
How many do u take do u use them as prescribe? If you go through withdrawls it is a lot like a really bad flu for around 2 weeks. give me some more information and I can give a little better information.