Talk to Oral and Maxillofacial Surgeon on Mouth Ulcer

It's been almost two years now that I have blisters in my mouth and it's also very itchy which is inside my left cheeks and what's in it has been almost two years and now what's there is also itching on my tongue. And to the left side of the tongue, , and the tongue on the left side and cheeks has started to read pus, so I am in a lot of pain, and I cannot eat spicy at all. so please suggest me a good doctor who can treat me. It means that the correct diagnosis has not yet been made that I have what type of dieses

i went to different doctors in Saudi Arabia, and they just given me Antibiotics, and some jell, and mouthwash