You put viability at after 24 weeks but plenty of premature babies have survived being born before 24 weeks. Not one baby in the womb survives without nourishment from it's host mother. But that doesn't mean it's not an unique individual, a separate life. But if there's no heartbeat then I think a lot of pro-life people can accept terminating before then.If you’re ok with terminating a pregnancy before the fetus is viable than you are admitting it’s not an independent life. It’s a blob of goo before it can survive on its own. Embrace it, it’s the standard you’ve already agreed to.