Definitely overthinking it man. Sure some girls might reject you because of it, but then, do you really want to date a girl that blew you off before even getting a chance to know you? Some girls like shy and nervous, and most won't care if you stutter as long as you're saying something worth listening to. Also, I've noticed that our stutters appear worse to us than they actually are. My son's mom didn't even notice my stutter till over a year into the relationship. At times, I'm thankful for my stutter. It shows me how patient and understanding a person is, and it shows me who's actually interested in what I have to say