i'm 5'7 but for some odd reason i've found tall girls very hot, sexy and attractive, i think it's a sexual domination fantasy, now, i'm not saying i would be totally submissive, it's that it makes me feel like the girl is my Queen, Empress, and I am her Guard, so i would still be dominant in terms of providing protection.
Come on girl you think it's a big deal to be 5'9"? That's totally fine and guys won't care. If you were like 7'0" then some guys might not be happy. But you'll be fine. Don't worry about it at all. You got nothing to worry about.