Do I eat enough food?

I'm 17 and a sneior in high school. I'm 5'7 and 124 lb. Today I skipped breakfast like always and ate the school lunch at about 11:20 am: a carton of milk, nachos & cheese, mini apple pie & a peache fruit cup. I came home from school at 3:00 pm and ate 2 toaster strudels and I just had a bowl of ice cream. I'm not hungry at all. Am i eating enough?