If you were tolerating your lower back pain prior to this new disc herniation (despite being on disability) and your pain now is intolerable, the L5-S1 disc herniation appears to be responsible for your new pain. If you have no motor weakness, then injections can be very helpful along with physical therapy.
If you have motor weakness or the pain is not controlled with conservative measures, then surgery (microdiscectomy) would most likely be your next step.
Dr. Corenman