About two weeks ago, my friend and I got out tongues pierced. She showed me her tongue yesterday and I noticed it had white lines. My tongue looks nothing like that; it's healing good. She says her tongue acts funny when she gets sick... i guess. The veins on the left side of her tongue are white as well. She insists on waiting it out to see what will happen. Does anyone know what this could be?:confused:

Thrush.