5 feet tall and 130 pounds? that doesn't sound liposuction worthy to me...
but regardless, it is a dangerous procedure that you should probably wait until you are 18 or older to do. if you want to lose weight, then the best thing you can do is eat lightly and constantly. people don't realize how much that can do. eat enough so that you aren't hungry, then repeat when you are hungry again. this way, your metabolism will even out.

i don't know if it hurts, but i know that it leaves extra skin behind that looks a lot more hideous than that cellulite you are worried about. honestly, you don't seem to need liposuction. though you think you are overweight, you can only be about 5 pounds or so. and your inner thighs? well, you will want them to be bigger once you grow up a bit...