Okay, well, freaking out is pretty normal. The thing to remember is that no matter what it is, you have family and friends here, and it seems to me like none of us are the type to ditch you when you need us. You won't be alone with this, whatever it is. The other thing to remember is that everybody, every single person and every sentient being I've ever met, makes mistakes, big and small. What matters isn't so much not making them, it's what you do afterward and how you handle it.