I've heard of toddlers, at that age, ranging from 21-33 pounds and heights between 30-37 inches

Abortion is when you abort a pregnancy - miscarriage is what occurs naturally. Miscarriage can occur up to 20 weeks, after which point it is referred to as a stillbirth. I miscarried at 13 weeks last year, and I had a lot of bleeding, with some grayish tissue and mainly globular clotted blood.