Some women notice less back pain during the actual pregnancy only to have it return later when they are doing more bending etc caring for the baby. Some women have back pain during the pregnancy and then never again so it is impossible to predict how yours will behave.
If you are not currently pregnant you may want to ask you doctor if you are a good candidate for an epidural cortisone injection (not the same one they give you for labor) and continue the physical therapy.
Also consider seeing a spine specialist who may better explain the above to you.
Sounds like you have what I have. Go to this link and you will see an out patient procedure done for this. Sounds like the herniation is hitting the nerves on the vertabrae.
www. foothillspain.com Good luck. I can't walk very far or for very long either, before my legs feel like they are going to collapse. It's the siatica nerve that goes across the right buttock and down the leg that makes me have to sit down a lot. Also have spinal stenosis. It's the nerves being touched by the spine that is the problem.
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