So I'm 31 weeks as of today and for the past few weeks I've been having pica cravings(craving things for non human consumption), these include gravel, Windex, cat food( I don't even have a cat nor do I like them), bleach, Lysol wipes, dry erase markers and the most common one CHALK, does anybody know what I should do to satisfy these cravings other than consuming this stuff. BTW I've let my OBGYN know about it and I have to get iron transfusions because of it but I really need something to snack on other than these things.