Hello Kelly,
Get it checked out... 2 things I can think of if related to your AS somehow.
1- reaction to medication
2- Neuropathy... I had tingling in my feet and hands for about a month many years back. My feet would also get cold. It freaked me out when it got a bit worse and finally got it checked out and they told me neuropathy (when inflammation gets in the nervous system for AS).
Hope you find some answers.
Tim
