There are a couple of different "things" that might be worth exploring depending on where you live...........I'll throw in some web sites,.......not to promote/advertise the material, but just to give you some where to start searching from.
1. Naprapathy,.......might be able to help, however, your most likely only going to find DN's(Doctors of Naprapathy), in Illinois or New Mexico,......a few others in other states........but sparse.
2.
www.sciaticare.com I found this site when searching on the problems that I have with my lower back, the guy who created it supposidely healed his own spinal disc "injury" as well as sciatica.
3. The multifidus back solution byJim Johnson. I believe this book runs in the neighboorhood of 13-15 bucks. The one exercise that I got from the book has helped me a lot with my pain(I have an L5-S1 pars fracture, Grade 2 spondlylolesthesis, and hyperlaxity of the SI Joint/Pelivs).
The exercise is done on all four's on the ground, simultaneously and slowly lift the opposite arm and the opposite leg in tandom,(creating an unstable envirnoment), pausing for approx. two seconds at the top........the key to this is to engage the multifidi by deep breathing,(basically stomach vacums......ala old school bodybuilding). Make sure to really contract/hold your breath in at the top.
Also, another pointer with this exercise is to strive for endurance and not strength.
4. Check to see if any of your local chiropractors have a flexion/distraction table. You could google, "cox flexion-distraction" Make sure you discuss the severity level of your condition with your Dr. and Chiro if you were to attempt this.......it's not reccomended for severe cases.
5.
www.backfitpro.com This is the website for Dr. Stuart McGill a prof. of spine biomechanics @ the Univ. of Waterloo in Ontario. He's books garner high praise from many professionals. I believe his e-mail is on the site as well. He responded to the e-mail I sent him, so it's worth a shot.
6. I'm not sure if your PT discussed this with you,(many PT clinics don't have the machines), but some people with herniated discs respond to Medx,......spine rehab machines, developed by Arthur Jone's Nautilus co. Another PT technique that your PT may/may not discussed with you that has helped with some people's pain relief with disc problems is McConnell taping.
7. Myofascial and soft tissue release type of techniques might help aide in providing symptomatic relief of.....tight psoas, hammies, low back, etc. I'd recomend looking into John Barne's myofascial release.....as it's quite gentle
Also, if for some reason surgery ends up to be an option down the line,..... I'm not sure if your doctor mentioned this, but artificial dics are now available here in the U.S. I believe,(not positive though), previous operations entailed drainage of the disc, or removal of the disc and thus fusion.
www.getadr.com Usually rule of thumb is a waiting period of five years to see if the technology has a good track record.
Hope this helps a little, sorry for the length