Hi Kara,
I'm not well myself at the moment, so this will have to be short.
You need to ask the Tribunals Service for what's called a 'Full Statement of Reasons' (SOR) for their decision. When you receive it, you need to contact an advice agency such as the CAB, and ask one of their benefits advisers to read through the SOR to see if the Tribunal have made an error (s) of law in their decision. If they have it can be set aside and a new hearing ordered.
Error of law is explained in this Social Security Commissioners decision
HERE
Hope this helps.
I'm now logging off as I need to rest, but hope to be able to post again next week.
Good luck.
Jim