It isn't in the bottom of my tongue and when moving my tongue, I still cannot see the lump from the bottom or from the top. I just can feel it with my fingers and teeth. When I noticed the lump I obviously freaked. The ENT asked me if I had experienced loss of movement of the tongue, loss of taste, or pain. I have none of that. I will probably see my ENT again because I'm full of questions! LOL Take care!