It´s sad you can´t accept yourself how you are. It´s not important how big your boobs are. But if they are such a burden for you, you are free to get a boob job. But before that: make sure you know the risks. I can´t provide much insight on this. Maybe we got some women here who went through this.

It’s okay to be flat chested, you are beautiful. While there is nothing wrong with getting a boob job, you shouldn’t do it because you are ashamed, especially if that shame comes from other people’s opinions of you. Try to accept yourself.

Plenty of people are fine or even prefer smaller-chested women. And larger boobs come with downsides - like greater stress on the back. But it's your decision to make, not anyone else's.