Boob Embarrassment... please help

I hope that everyone understands why this is posted anonymously as it's fair to say that I'm beyond embarrassed about this problem. I'm 17 years old and my boobs are saggy. I know that many will think that I'm over reacting and they are imagining normal boobs which are just less perky but my boobs are severely saggy. I feel like an old grandma, my nipples point completely downwards and they are not tear shaped or even slightly rounded they look like a weight is pulling my nipples straight to the ground. I feel extremely self conscious, I can't stand to look down at my chest when I'm changing so I normally have to keep my head up, I can't just not wear a bra and I definitely don't feel attractive in any sort of way. Honestly I just don't know what to do, I can't get plastic surgery as I have university ahead of me and I just don't have the money for anything. I can't just ignore it because it's serverely making me feel upset and ugly. Any advice??😥