I'm so sorry to know of your sciatica. The spirit of your postings belie your physical condition.
Only one of my sciatica attacks was severe enough to render me helpless with paralyzing pain and eventual hospitalization.
I know doctors today are so leery of malpractice suits and other legal restrictions regarding pain management medications that many are reluctant to prescribe them.
My doctor of 25 years held out until I told him that, if I couldn't get a pain management prescription from him, I would go into the streets to get something because I was not going to continue writhing on the floor with tears streaming down my face.
My parting shot is don't just give up. In this day and age there has to be some kind of pain management assistance that can improve your mobility.