Stretch marks? Like, the kind that EVERYONE has? Literally anyone that has taken any kind of sudden growth and their body couldn’t keep up with it? Girl, that’s really COOL! Be proud of that! Your body went on a growth spree. Go you! You’ve leveled up!
First of all, I’m sorry to be such a diva but at some point you gotta take a stance:

FUCK what guys think! 

What have a bunch of men you haven’t-yet-met done for you? Why do you have to break yourself over their opinion? 
I know that the judgment of others can be scary, but please, PLEASE try to remember - your body is yours alone. No other can replace it. If some idiot tries to judge you because of something you can’t control, because of something that happened naturally and you couldn’t prevent - FUCK ‘EM. They can fuck right off and not have anything to do with you, because they don’t deserve it.
Second of all, stretch marks are REALLY, REALLY common. As I said, everyone has them. They’re signs that your body went through some big changes. And are they there to stay? Well, for the most part, yeah. But that’s NOT a BAD thing! They are part of any body, just like hair is, just like eyes and nose and ears are. They aren’t unattractive or weird. They just are… there. Don’t overthink this, friend.
And once again - if anyone tries to pull the “eww, stretchmarks” biz on you, skip them across the lake like the rock that they are. Their opinion is based on childish misconceptions. Anyone with any idea of anything will understand that stretchmarks are natural and DO NOT take away from your overall sexiness.