When you workout you are burning fat and building muscle. Muscle weighs more then fat, therefore, you extra pounds. Get it? You seem to be at a good weight to me... 95lbs, must be nice. Are you wrking out to lose weight or just stay in shape? I'm sure that you are not gaining fat from exercising... Just muscle. Don't stress about it, work out less if you don't want the extra muscle.

God bless and good luck,
teresa