Hi There I'm 20 Year Old And I'm Addicted In

Hi there I'm 20 year old and I'm addicted in eating white clay that's found in river beds mainly. I'm concern because people have told me to stop eating this sand because it will make me infertile. My mom told me I used to eat sand as a toddler she thought I'd grow out of it but clearly I haven't . will I be infertile? How can I stop? Please help