All right so I have been dating this amazing girl for 2 months now and I stupidly proposed to her. She did say yes and I'm thankfull for that but I'm just not so sure if she will go through with it because where only 17.

To me I think you two were just fought up in the moment but it's hard to tell if you really love her only because you two have been together for 2 mo witch is not that long I thinnk you and her should talk about it and see how much you mean to each other cu I had my boyfriend do the same thing and I said yes but now I feel bad because I don't live him the way I did so you should find out unlike what I did. I hope I helped sorry if I didn't

You've been going out with this girl for 2 months. That's not nearly enough time to know you love her and want to spend the rest of your life with her. I think you need to grab a hold of reality and stop trying to grow up so fast, you're just a kid.

Seeing as you are both minors and in High School, it's not likely you will be getting married anytime soon any way.
You don't even know each other for goodness sakes.