My ulcer

Oh GOD!! My ulcer is killing me. It's been 3 days. And it's at my jaw point gum there where i open & close my mouth...it's pain. Just brought watermelon frost yesterday, but when i woke up this morning, no use! My throat is pain too!! I check the mirror, GOD, the ulcer is actually a hole! Kinda big and deep hole! I barely can eat not even a bread. My only hope for food...strictly porridge ONLY. Help~~~~~~~~~~>.<"