Strange feeling under my tongue?!?

I've got a strange feeling under my tongue. It's not visible or anything. It's more of an aching than anything and feels heavyish. It feels as if i've been trying to push saliva/air from under my tongue (in sort of a scooping motion) and it's as ache from that. Do you think it's just a habit that will go once i forget about it or should i seek medical advice?