You can't just walk into a clinic and get an abortion. You have to make an appointment. Since some states are banning or making the procedure difficult to obtain, some women are forced to travel to other states, which is creating a backlog in states where it is legal. So some women are having to wait until a later stage of pregnancy than they were at when they first made their appointment. Even before ROE was overturned, in many places, you had to wait a week or more for an appointment.

Nobody decides at week 40 that they're going to have an abortion because they just don't want to have a baby. It just doesn't happen. And any late stage termination is due to medical considerations for the mother or the fetus. It's a decision that no state has any business making for a woman.