What Causes The Electrical Zaps And Zings In My Legs At Night, Despite Taking Magnesium And Calm Legs For RLS?

I am up again tonight with these zings in my legs. I am fine all day and even in the evening when I relax and watch TV. However, once I get in bed within 20mins these zings and little shocks affect my legs and cause me to not sleep. I ve read up on restless leg syndrome, but this seems more like electrical zaps. I m exhausted and not sure what to do. I take magnesium at night and even ordered Calm Legs which contains some iron and velarium root which is supposed to help RLS. What is happening? I have also recently stopped taking my Anastrozole and wondering if this is a result of being on this for 5/5 years? Could this be the beginnings of neuropathy?