50% of pregnancies are unplanned, but there is no reason in U.K. for a woman to decline to get the morning after pill, decline to get any other form of interception with any potential pregnancy, such as having a coil fitted, and decline to have more than one form of contraception from there onwards.
The imagined picture appears to be one where absolutely accidentally, a woman in the middle of pregnancy suddenly notices she is pregnant with an unwanted, unsupportable child, and is 'forced to choose' to have her DC ripped from her body. Very dramatic but not a true picture. Only a handful of women don't know they are pregnant till a late stage.
I do, though, wish that people would take instant action where there has been any risk of pregnancy, not leave it till there is certainty, as if they wilfully prefer to give themselves any potential emotional cost by allowing their brains to kick in with the animal protective instinct. In that respect, it was far better before pregnancy tests were not only readily available, but also were able to detect pregnancy almost as soon as the man leaves the bedroom!
If it's unplanned, stop it fast and stop any chance of it happening again. Not only does the planet not need extra population, humans do need those, rare, children who do arrive to be longed for, deliberate, carefully planned, prepared for, provided for, cherished by their immediate circle and their wider community. There shouldn't be a need for the central or local government to lift a finger for these exceptional, beloved stars. 'A village will raise a child'' A child who is any less precious has less than the life deserved.