Re: can't stand up straight
Like Quietcook, I would recommend a spine specialist. I have had three surgeries on my spine. I would compare them like classical music and heavy metal...
As far as what do now, its a good question. Back/Nerve pain can be very strange. It can come and go, or it can remain constant. First thing is to get out of pain. We usually can't function with a severe amount of pain, especially if you can't stand up. If you are in pain, I would see a Dr for pain management. I would try and find a spine specialist if possible. I think if you can get out of pain, and are able to wait to get in, it will be worth it.
Surgery may be inevetible. Luckily there are good advancements to spine surgeries that were not available a few years ago. Most Dr's recommend trying other mean of fixing the problem before going to surgery. This may be PT, or Injections, etc. Sometimes though, it can only be helped with surgery.
If you can wait to get into a good spine specialist that would probably be the best bet. Sometimes it can't wait though. Spine conditions vary, so only you and your Dr will know. Good luck and hope all goes well.