My eating disorder got triggered

I’m home for the holidays and my mom doesn’t actually know that I’ve struggled with bulimia. I’ve gained about 15 pounds since she last saw me because I’ve been in therapy and taking medication. She said I looked bigger and was telling me not to eat too much. It was a big trigger for me, I had a panic attack and went to the bathroom and threw up. I purged again before I went to sleep. I’m so mad I’m slipping back into my old habits. I don’t want to bother my therapist because it’s Christmas