Important - we don't eat cows. We eat steer. Cows have been bred over the decades and centuries to give birth and milk, not to yield meat. That's important, because some cows are heavier than their steer counterparts (Holsteins, for example).
Also very dangerous is inducing a miscarriage by taking strong medications prescribed for other ailments and many of the ways to induce a miscarriage can actually end in loss of life or other very serious consequences.
It is a wonderful way to prepare your body for getting pregnant after a miscarriage. Uterine massage can be preformed by a uterine massage therapist or you can learn to do it for your self in the Self Fertility Massage DVD.