Just make sure it doesn't screw with you worker's comp. Really, it shouldn't be a problem for comp to cover the chiropractor either.
Hitch, I'm not sure what state you are in, but in Kentucky, you have the right to go to whatever doctor you want. You have the right to a second opinion. I don't know if it's time to go to a lawyer or not, but you definitely need to look into other options and know your rights and the work comp law in your state.
Pain clinics/epidural steroid injections are also another pre-surgical choice. Sometimes people with your condition get relief with VAX-D or similar traction based treatments. Neither of these 2 options helped me, but I would look into both, especially the injections ASAP. I know people with your exact condition who were pain free after the injections.
Your doctor's advice sounds weird. Giving you the choice to have surgery or to suffer for 3-6 months more doesn't sound cogent. Does something magical happen sometime during this time period??
Personally, I've had a ruptured disc that was surgically repaired, and I now have another disc herniation at that same level L4/L5. Surgery wasn't really a choice in my case because of all the nerve damage that was being done. I have a friend who is a radiologist that read my MRI and told me I HAD to get my problem surgically fixed or I'd be suffering foot drop and an impaired gait the rest of my life. The surgery corrected all of my leg and foot pain/numbness immediately, but I have never been rid of my lower back pain.
The disc herniation I have now is smaller, and I live with it. Exercise does help, and so does weight management. I hurt a lot less now at 208 than I did when I got up to 230 pounds. I work full time in a strenuous job with tons of lifting, and I manage. I'm quite positive I could have filed Comp and be on disability now, but that life is no fun, nor is it very lucrative. I have pain every day, but I think I have a VERY high tolerance for it, and I've learned to be as happy as I can living with it, and count my blessings that it isn't something worse.
Hope you get to feeling better, and let us know what is going on. It's really easy for me to empathize with you!!