When I was at our site in Lauterbourg for SAP User Acceptance testing at the end of July I ran into real problems and could hardly stand upright, had to visit a local doctor who immediately prescribed painkilling injections 3 times a day as well as some pretty powerful oral painkillers, this really helped me get back on my feet until I was home.
I then attended my doctor at the local health centre, sent for an x-ray and sent to the physiotherapist for the practice, got an appointment within the week so decided just to use this instead of going through the private health care of my work, big mistake, initial physio consultation lasted barely 20 minutes and I left with 2 or 3 simple exercises and told to come back in 2 weeks she also said her goal was just to make the condition liveable

I was also referred to a neurosurgeon consultant at Murrayfield Hospital and managed to get an MRI scan before the consultation. As you can see from the scan picture there is a fairly large rupture of one of the discs in my lower back.

After the visit to the surgeon I decided the best option was to have an operation as this should mean I recover from this rupture quicker and the chance of it re-occurring is much less.
So at 7.15 on Friday morning I head of to Murrayfield and should be on the table by 8.00, all going well I will be out on Sunday morning. Recovery is no sitting for long periods, walking and lying flat for about 3 weeks. No driving for at least 2 weeks

Apologies for the long post but if you are in a similar situation do not accept the NHS just get you bearable solution, press for MRI scan and referral to a good consultant.