So if a woman can't get the prescription, she may well let several weeks go by and then get a later, surgical abortion if she does turn out to be pregnant. I'm not sure why that's progress, frankly.
What you don't seem to grasp is that this is a form of abortion!
You either believe that life begins at conception or you don't. You're line of thinking seems to favor abortion so long as the life being aborted "doesn't look like a baby yet."