I have braces and I have a question about them.?

I don't really understand what you mean by "jammed". You should be able to floss by using the flossing tool (floss threader) that your dentist gave you (well he SHOULD have provided you with one). It should be a little plastic loop that you put floss through, and then you slide it through your braces so that you can properly floss. Here's a website with pictures to explain it better. If you're still unsure, then you should ask your dentist next time you go. I know when I had braces, I had monthly appointments. Good luck!