I have a 2mm central disc protrusion at l5-s1. My pcp says this is too small to be causing my bilateral foot pain. What do you think? Worth a 2nd op?

Shouldn't cause. Bilateral foot pain, especially at that level. While it is always safe to get a second opinion, and i cannot be sure without seeing the mri, a small protrusion would most likely not cause bilateral foot pain. Have you checked your a1c to make sure you are not looking at diabetic neuropathy? Would need to see the mri, but it doesn't sound like that's the cause.