Sorry guys but no point sugar coating this, yes its fine being cute and all and Im sure it is great but only if you like being seen as cute and cuddly, clearly the op doesnt like being the 'cute' one of the group and or get treated like an 11 year old. Same for guys who are 5ft5 and girls says 'you're cute', some would take it as a compliment while others will go home, pick a corner and sit in it and cry for the next 3 days
If you happen to be the latter then honestly there really is no sugar coating it, if you want change you got to go after it, you wont magically wake up 4 inches taller....
Start saving which is already clearly stating the obvious, see if you can get a student loan but only use this as a last resort. Loans and LL are two things I never want to put in the same line.
And eventually do the surgery a year from now or 10 years from now, who knows it depends on how well you can save and how much money you can earn. If you are as poor as you say you are then you have no choice but to finish uni/college, hopefully get a half decent job and save, save, save.
Wont be easy but not impossible either, good luck