My 5 year old is having pains in her legs, doc said it's growing pains?

She was just having the pain at bed time. So bad she would cry. I kept trying to stretch them and mage them, nothing helped. Now it is happening more often. The doc said it's growing pains. The only thing that helps is like icy hot or biofreeze. Now she is having pain at school and I can't give her tylenol everyday, nor go and pick her up. So as I put the pieces together, it seems that when she is more active like gym or recess or playing outside and she comes in and sits down, that is when it hurts. Anyone have any ideas to take this pain away? None of these stretches are working. Doc said we just have to deal with it till it goes away and that could be a couple of years!!!! Help! Anyone have any answers? Anything??? Thanks