I'm 31 weeks pg with my first and have an intense craving to eat chalk! It used to be cardboard, particularly toilet roll and kitchen roll tubes, but now it's chalk! I heard that it is a sign of pica and must mean I'm suffering from a deficiency of some sort, however I mentioned this to the doctor and all of my iron levels etc checked out fine! Why can't I crave food?! I just want to be normal! 😂😂😂 xxx