PARENTS ARE PRESSURING ME?!?

Ok so I have always been insecure. I am outgoing and loud on the outsidee, but on the inside, i am feeling HORRIBLE about myself. Anyways, I am 14 and I am 5'5" and I am only like 10 lbs overweight..(at least i think i am). I saw that my percentile for my age shouldnt be over 95%. I am only 90%..so according to the website, i am "at risk of being overweight"..my parents (ESPECIALLY my mom)..they are always on my case about "me needing to lose weight" and "id look so much prettier if i were skinnier" and how "i need to get healthier and fit". They dont realize how much it hurts! OF COURSE I know im chubby! OF COURSE I am insecure! They dont realize what being a teenager in the 21st century is like! It REALLY hurts my feelings especially when i try on an outfit that I love and feel confident in and my mom or dad goes "no that looks bad on you" or "no you need to find something to cover your bigger legs." I dont feel THAT bad about myself until THEY come along. They wonder why I feel insecure...and its because of THEM! I dont get bullied, no one pretends to notice, but them. Its THEIR fault i feel horrible about myself. I just dont know what to do.. ):