Personally i think it's pretty early - yeah, me too. Even if life does begin at conception, the zygote is just a cell. It has no nervous system, cannot feel pain or anything else. Very early in the pregnancy, the baby is just a clump of dividing cells, that's it.
Later on, the foetus can move, respond to its mother's voice, feel pain. Just look at that scan which someone posted a few pages ago in this thread. The scan at 12 weeks clearly shows a miniature human being.
Oh that is grotesque - if you think that's bad, how about this: a US woman called Lindsey Ellis deliberately got herself pregnant just so she could have an abortion and make a documentary about it. The documentary is apparently called The A Word. WTF is wrong with these people?!