Does anybody know what this means?

I am currently 31 weeks pregnant with my second child. With my first I had anemia and low iron. And this one I'm not sure if i have it. But I have a weird craving for just plain salt like not foods with salt on them. Pine-sol and cascade dish pods lol obviously I won't eat them but I'm curious if anybody has the same thing. I'm mostly concerned about the salt. I never took my glucose test or anything.