Panic

Yesterday was going good.
Had pizza for lunch (my all time favourite binge/purge food), successfully yakked it all back up.
It was a beautiful day, I was singing along to my iPod, driving obnoxiously with my windows down.
It was a good day.
BUT THEN
I went to see a movie with my mother.
I hadn't eaten dinner at home because I was late getting home from work, so she made me get a slice of pizza.
I'm thinking, "okay, no problem. I'm a pizza-purging pro".
Did. Not. Purge.
It's like she knows. The way she looked at me when I went to the bathroom, the way she said "Don't be too long now". Suspicions are high.
Then popcorn.
Oh god. The popcorn.
Nothing was purged. Pizza AND popcorn?!? We are talking upwards of 1000 calories here.
I kept repeating in my head "The average person eats 2000+ a day. You will be okay."
I did not believe myself.
We got home from the movie at 9:30. The gym closes at 11.
I say            "I think i'm going to go to the gym"
Mother says "... But it's late" 
I say             "... I won't go if you really don't want me too"
I think         "shitshitshitshitshitshitshit"
Mother says "Alright I suppose. I love you"
Cue blackout.
The next hour and a half are a blur.
I am driving way too fast. I am smoking. I am on the elliptical. I am not moving fast enough. I am on the bike. The gym closes. Has it been an hour? No only 50 minutes. Not enough calories. I am driving again. I am smoking. Are there tears? I don't remember. I am home. I am tired. I pass out.
7:00 A.M.
I wake up for work, still in my sweaty gym clothes. I feel calmer, but confused.
Did I just have a panic attack?