A/C Problems?

My a/c was not working in my 2001 Suzuki Grand Vitara, the compressor was not clicking on. I changed a blown fuse underneath the hood and now the a/c works again, blowing out cold air. Now, when I turn the a/c on, my belt is squealing some kind of bad. When the compressor cuts off the squeal goes away, when it turns on, the squeal comes back. The belts were just changed a month ago. What could it be? Maybe the belt is too tight or too loose? Maybe the a/c compressor? I'm not too sure. Thanks in advance for any help!