What is the right stance to have regarding gestational limits on abortion?

I'm trying to work out how I feel about this.

Every so often, republicans in the US will accuse democrats & leftists of being "pro-abortion up to the point of birth". Sometimes they go even further and make stuff up about "post-birth abortions" (I think Trump said something about that at one point).

I always hate it when they say stuff like that because it just feels so mendacious... but honestly, I have trouble refuting it because it does seem like a fair amount of liberals & leftists are opposed to any gestational limit. (Look at the comments in this Reddit thread to get an idea of what I mean). Their reasoning seems to be that even though a qualified restriction on late-in-the-pregnancy abortions might seem like an appropriate rule to have, it's impossible to write such a law perfectly so that it would still allow abortions to be performed in every appropriate case. There would always end up being a few cases where a woman who really ought to be allowed to get an abortion would be encumbered from getting one.

I understand that argument, but... idk, I guess I just can't shake the feeling that such a law can still be implemented in a good way, and should be. The UK, the Netherlands, and Pennsylvania all have gestational limits on abortion of 24 weeks, with cases of fetal impairment, risk to the life/health of the mother, and pregnancies that resulted from r*pe excluded from the limit (as is common). I do not see the UK, the Netherlands, and Pennsylvania as particularly oppressive places for reproductive rights. As far as I know, the medical consensus is that 24 weeks is both the point when fetuses become developed enough to survive outside the womb, and also when they become developed enough to experience pain, so I do think there's some moral consideration to be given to that.

So what's the right answer here?