I understand that life begins at conception, and that the newly fertilized cell is indeed a human being, lacking only nutrition, time, and protection in the uterus before birth.
I understand that the IUD is abortive because it works by causing a low grade irritation in the uterus so that the fertilized (and thus human) egg can not implant in the uterus, and is sloughed off and dies.
My question is this: Is it as bad of a sin (because the egg is at cellular level and can not feel pain yet) as a later abortion when the fetus (unborn baby is larger and can feel pain)? Because it is an abortion either way, is the degree of sin the same?
Does it matter how long the IUD was in use, the longer in use the more fertilized eggs were likely to have been aborted in this way. Does a larger amount of eggs lost equal a greater sin?
How sinful is the IUD compared to a later abortion?
I appreciate any input you can give.