I ended up with foot pain and numbing after my first microdiskectomy. The sciatic nerve is comprised of many individual nerve roots and since it is your Big Toe involved it should be your L4/L5 nerve root. I do not have feeling in most of my foot and have no push off motion because of L5/S1 nerve damage. I also have constant pain in the foot. Remember that it takes a long time for these nerves to heal. Something like and inch a month and if a fiber is damaged within the nerve root it must heal the whole length of the leg then. Have patience and just keep working on it. I would have the consult and hear what the surgeon had to say, but I had three surgeries including a fusion after my first conservative surgery where I lost a lot of feeling from my butt to my foot and have yet to gain anything back. However, the surgeries did fix my back pain so now I wait to see what comes back in my foot. No one knows that answer. Good luck.
julie