Bowel movement question - TMI

👶🏻Sweetness⚓️ • Instagram; Hannah.the.gem (add me there for messaging)
So I'm anemic and take iron pills daily. Because of this I also take fiber so that my poo comes out ok and I don't get constipated. 
Well, I'm 2 days late for AF and NOT constipated. I know that hormones make you constipated if you're pregnant but has it switched for anyone else? Even my doc thinks it's weird (but not worrisome since I'm able to poo)