"Tongue problem and ulcers under tongue"

Been to the ent clinic three times now and they still havnt got a clue what's wrong with me one week its sum thing the next week they havnt got a clue but in the mean time I still cannot eat properly and still getting ulcer under tongue and tongue problems now waiting for another app for MRI scan and got to see a facial specialist very fed up think I might be goin to my gp see what they suggest