itchy feet... random I know.

Not even sure if I am pregnant but a lot of symptoms are popping up that make me thing I might could be! Strange thing the past few nights.... itchy heels! It may just be bc it's December and dry and cold but this is more than just dry itchy skin... and it's only at night. I know about the OC or whatever it's called but my question is.... if you've had it what week of pregnancy did it start and what made it stop? Thanks!