Hi, Please I'm 32weeks Pregnant And Eating Chalk Each And

Hi, please I'm 32weeks pregnant and eating chalk each and everyday as I'm a teacher and always come into contact with chalks. And the kicking of my baby doesn't seem right but when I went for the scan they told me my baby is ok but I don't believe them as the kicking of my baby feels like just a rumbling in the stomach. And I know I'm consuming too much chalk which is not right and I don't also take my medication. Please what do I do because I don't want anything to happen to me and my baby