gbachman,
Thank you for your service, and welcome to Hadit!
Larryj & berta have given you great advise. Get enrolled in the VA Healthcare system, and let your newly assigned primary care doc, that you think you have PTSD, you'll be diagnosed and treated for your condition. I receive treatment from the VA for PTSD, and they are great!
BTW what is your 10% for?
AS far filing for a PTSD claim, I think that you should file right away! If you have PTSD from your military service, you are entitled to compensation. . . you've earned it.
Here is a link that explains the new PTSD regs http://www.va.gov/PTSD_QA.pdf