Need Help with A/C on 98 Malibu

Hi Guys,
Need some help please, My AC stopped blowing cold air from one day to the next....was working just fine...any suggestions? checked the fuses..don't know where and if there are relay switches. Could it have leaked all my freon overnight?
Thanks in advance for all reply's.

There is an AC relay in the fuse panel under the hood and there are 2 panels in each door. Maybe you eed freon because if you have never had it checked since 98, it is about time.