What to do?

So I've been talking to this guy for a few years now, we've dated & been friends. He's 19, I'm 18. We have finally decided to get married as soon as he gets off of color code. He gets off at the end of October. But, while talking to him today he's telling me he has felonies. FelonieS. He explained to me what they are, which one I know is going to be thrown out. There's nothing that ties him to the scene. And the other, I'm really not quite sure. Yall, I was so excited. I've picked out my wedding dress, everything for our wedding is ready. But now I'm not sure if I wanna marry him. I knew he used drugs a year ago, that's why I left him. But I helped him get clean, then decided to work things out. What should I do? My parents love him, we have even talked about getting an apartment soon. I'm freaking out. I'm the only one who knows this, and I don't really want everyone to think bad of him bc this stuff happened almost a year ago. But I need help