i guess another suggestion would to be call a counselling service? i used to volunteer for one, and these are the types of situations we helped out with frequently (relationships!).

my pdoc encourages me to call when i am where you are, but this has only been a recent(ish) development. when i first started out with him, and for the first few years, i would only call if it was an emergency.

like chaotic said, though, your T will not scold you. the worst that will happen is she will check how you are briefly, give you a few activities to distract yourself and suggest talking about it the next time you see her.