The fetal stage of life is no different than the baby stage or the adolescent stage or adult stage or any stage. The fetus is a living human life, and it was always considered a baby even before born. Just look at all the movies or tv shows or your friends who are preganant and see if they refer to the susbtance as "my fetus" or "my baby". The only term I've every heard other than for abortionists is that it is still a baby when in the mothers tummy. If calling it a fetus makes you feel a little less like a murderer of a baby thats all that your change of names does. The fetus is still a baby, so murdering a fetus is the same as murdering a fetus. Double talk will not help you or anyone else to change the reality.
How many of us really remember when we were even less than a year old or two or three and does that make us any less human? How can the memory of a day old infant be any better or worse than that a few days younger?
Baby's have been known (and proven) to learn while still in the womb!