Is this a good thing?? or bad thing?

im on a diet and im 12 5'3 and 94 pounds im trying to go to 86.3 but idk how to get their today i had homeade pizza (last time i had pizza was 3 months ago i HATE pizza but i had to eat it. i was forced to. and lazania. an ice cream cone and 2 blue berrie muffins (i eat healthier than this but today i guess was special) now i feel horrible and regret eating all of this) and did dance dance revolution supernova for 2 hours (my kid workout) and now getting ready to go to bed help me i realy want to get to 86 (if anyone can tell me how many caloris i ate that would be good)