That nurse could be right, and yes, some meds can cause it, I found out when doing some research a few days ago. Keep the foot elevated, and that might help at least some of the swelling to go down. It's been very rare that I've ever had swelling, too. I haven't had any pain (except when I worked at the casinos and had it after standing on my feet for hours and hours straight, but the pain was in my feet, not from the swelling itself), which is good.