I am not 100% sure it is ulcers now.are the edges of the reed sharp? are you rolling your lip out?
i have to round the edges of my Legeres for that not to happen.
sounds painfull... I used to bite loads, to the point of bleeding, and I have a mate who was biting through his lip, and ended up with a huge gouge, a line where his teeth were the went well over halfway through his bottom lip, and was white round the outside like a mouth ulcer can look. when he peeled back his lip it was a good inch long and few mm deep. nice!I am not 100% sure it is ulcers now.
No sharp edges.
I have an excercise that I have been given starting on high F
F E F Eb F D F C# F C F B F Bb F A F
I think I have overdone this one and been bighting to get the high notes.