It is believed that one in five pregnancies ends in miscarriage.  Defined as a pregnancy ending before 24 weeks, without a surviving baby.  Whether it happens at 5 weeks, 10 weeks or 20 weeks, the effect on the parents can be absolutely devastating. Here, a bereavement expert explains what a miscarriage is, as well as possible causes and the effect it has on parents. Mark and Lara describe how they dealt with the miscarriage of their first baby and how their loss has impacted on their lives.