Our ceiling started leaking right below our shower. I removed part of the ceiling and there are several drips under the shower floor. 2 years ago we had our shower tiled and the guy put the tile over top of the shop pan that was already there. I removed some of the tiles and the drain cap from the shower floor and everything under the tile is wet. Down below I don't see a lot of wetness around the drain and I know the guy didn't mess with the drain, since he didn't remove the shower pan. He maybe added something to get the shower drain high to go over the new tile?? OR is it leaking through the tile and that is why it is all wet under the tile. I looked for cracks in the pan and don't see any?? Help not sure what to do??