Would you consider me fat?

I weigh around 105-110 pounds and I'm 5'6". Not disclosing my age. Lately my 'friend' has been calling me fat (because I actually have boobs, which is good, cause I'm a girl, wouldn't be so good if I were a guy). Which doesn't make any sense because she's told me before that she's 145 pounds, but I digress. So I would like to know your opinion; I don't think I'm fat although I may be sadly mistaken.