So I'm pregnant but I've had an obsession lately with expo markers. Like I want to bite the felt tip (the big markers, not the small ones) and smell them. I dont know why...I don't have any in my house, I used to want this when I was in school....I've heard of pika...but never really thought much of it until now that I'm having this craving. Think its worth talking to my doctor about or just ignore it? I've heard that it could mean I'm lacking something?

Also they just tested my iron levels and they were good a week ago...I'm at a loss