Medical problem
I agree with Caveman that "FAA Problem" is an oxymoron.
The FAA just needs an update letter from your doctor. Call
FAA Aeromedical Certification (sorry, I didn't see a phone number on this web page) and/or the regional FAA aeromedical certification office
for the state where you live. Tell them you just got the letter and that you will forward an update letter from your doctor. Maybe you can get an extension of time to provide the letter. It probably is wise to follow-up with something to them in writing documenting your conversation. Then, call your doctor and get the letter. Explain to your doctor what kind of letter you need, that this is an urgent matter and you can go to his/her office and pick up the letter.
The letter need not be a lengthy narrative. It is almost something that your doctor's medical assistant could draft and have the doctor sign, but do not tell your medical office how to do its job.
After you get the letter, fax it to the Aeromedical Certification Branch.
You might also call AOPA if you are a member and speak to a medical counselor.
www.leftseat.com is indeed an excellent FAA medical website.
Finally, it's really a very good idea to plan ahead for your medical. Call your doctor a couple of weeks ahead of your medical and ask for an update letter. Bring it to your exam. Your AME may not ask for it, but remember that you absolutely have to be loaded for bear for these events.
Hope this helps. Good luck with your efforts.