I agree with Dragonfly; please don't be too hard on yourself about this. I did a similar thing a few weeks ago and immediately I'd done it I wished I hadn't. I beat myself into a lather over it and sent my T. an e-mail apologising and telling her what I had done two days later, even offering to terminate my sessions. She responded by saying it was no big deal and no harm was done. I apologised again in person at my next session and all was forgotton since.
Tell your T if you feel you can, but don't worry and don't feel guilty, you've done nothing wrong.