I guess that's the time you grow some elephant skin --- or you don't, which spells trouble.
You want to continue your education and so you have to eat it up. Can't run away, that be just to painfully emotional and silly.
I find, I have developed an inner attitude that may be arrogant, I say to myself SO WHAT!?!
I do my thing, do it best and DO NOT EXPECT ANYTHING, and learn to ignore them for THEIR ignorance or what ever. You can not change it/them. ONLY TIME WILL DO THAT.
In the long run it actually will make you stronger, it is one of those hurdles that will come up over and again. Also, and that is for me, it helps to remember we ARE transwomen, so if someone calls you being a guy, just LET HIM. Water of a ducks back.
You will never be able to force such issues and are reliant on TIME, GOODWILL, and TOLERANCE.
But it's fine to vent. We, all of us have been there in some way or another. And if all fails... go to the loo and have a good sob, usually I feel for the better after it.
Hug,
Axelle