If it makes you feel any better, I sent a rude , sarcastic, wierd, mean email to my T when I didnt really mean to but sent it anyway..and I know she will reply eventually and that I have to see her.
So, you're not alone! Its scary, it makes your heart sink...it feels like "UGH OH NO"

but you will get through it, and hopefully so will I.

T's care, T's are there to help