I'm 16 and ever since a few months before I started getting my period (when I was 12), I get white/clear discharge everday. I have to wear mini pads everyday or else it will go through my clothes. I don't think it's a yeast infection because I've had this for 4 years. And every month when its near time to get my period, I get even more discharge.. I just wanted to know if this is normal and if its not if any one knows what it is

Its normal discharge. Every woman gets it. it is what keeps our girl parts healthy and moist as they should be. They make pantyliners simply for this. As long as it is not discolored or foul(fishy) smelling, you are normal.

I really can't add any more to what Al said. She is right on target here. This is normal, natural and healthy.

During the times that you are getting more discharge before your periods, this is when you are ovulating and it is the most fertile time for you to become pregnant.