I had a redo fusion of my L2-3 on May 15th and since then have been having nerve problems similar to yours. Both of my feet are swelling and I feel like I have low circulation in my right leg. I also get shooting pains down the back of my right leg that are quite unpleasant. My doctor said I either have an infection from the screws they put in, or a nerve got irritated during surgery and is just now making itself known. I do know that nerves only grow 1/16 on an inch per year, so there is a good chance of recovery for anyone with nerve problems. Do try to wait it out if they mention surgically fixing it.