Mine is also under my tongue/on the side of my tongue, way in the back by my molars. I’ve had it for over a year and have seen 2 ents who both said they could feel the lump but not see it. Both were totally unconcerned and said a biopsy was unnecessary. I’ve had the tongue bump for over a year and I’ve recently developed a neck lump on the same side, since October. I had a negative neck cat scan with contrast which showed nothing in my mouth or neck. The ent actually told me “he make up what’s not there” & basically told me to stop worrying. I’m really torn as to whether I should drop or push the issue. Was your lump smooth? Ulcerated? How was the mucosa over it? Mine looks relatively “normal”. One of the ents I saw is actually a head & neck cancer specialist(the one that basically told me to stop worrying but he did look thru my entire ct scan) but I am still really struggling with this.