The problem with epidurals is that they can cause damage to the dura. This is probably why you were advised not to see a physio or chiropractor at this point. I would press your Dr for a definitive diagnosis. If the symptoms you are experiencing are related to inflammation of your dura as a result of the epidural then no form of stretching, mobilisation or manipulation should be undertaken until these symptoms settle.

Your dura is like a protective sacking around your spinal cord and runs from your neck to your tailbone. Damage/inflammation of your dura can cause widespread symptoms - legs, arms, neck, etc. The pain is often quite intense. I'd proceed with caution at this point and focus on getting pain relief and your diagnosis sorted.