One of the things to note is that a 6 week abortion is basically within two weeks of missing a period.
A pregnancy test's result is based off the last period you have had by default, which makes it very hard for a lot of women, especially younger ones to fit in that 6 week timeframe (by the time you're a day late you're officially 4 weeks pregnant), as many will have quite irregular ones especially from memory if you're young, have certain health issues, on certain medications, or simply in some cases athletic..
So effectively a 6 week limit is a ban to most intents and purposes as it means you have to both have a regular menstrual cycle, and take a test within a day or two of being "late" (or better yet, do one every day), then if you're getting the pill from your doctor, get an appointment with them and hope they'll prescribe it within the next week or so, or if you have to get it by mail, hope that it arrives quickly.
It's worth noting that most of these abortion laws that have been proposed/put onto the statute books are more severe than they were pre Roe vs Wade, and that the "Christian right" churches in the South IIRC changed their definition of when a baby got a soul about 6 years after that decision as part of their campaign to ban abortions*.
The Missouri one was at first specifically going to ban an abortion in the case of an ectopic pregnancy, it only got changed when pretty much everyone with a clue about pregnancies and complications basically screamed "you're nuts"**, so instead they changed it so that "abortions" are banned until the woman's life is immediate danger - so with an ectopic pregnancy that apparently means wait until the woman is bleeding out into her belly, then get two doctors who must not be from the same "providing network" (to avoid collusion) to agree that it's needed. In the meantime the woman is dying and even if she survives is likely to have far more issues every carrying a baby to term in the future due to the damage being done. What should be a simple, safe procedure becomes a major trauma event requiring critical care measures and potentially lots of blood transfusions as it will have to be left until the patient is going into shock/crashing from blood loss to comply with the law sufficiently to avoid some ambitious Republican DA from pressing charges on the doctors.
Basically it's "*** women, they're expendable".
*And I've said it before, this is purely a Evangelical/Right Wing Christian belief in the US, it utterly ignores the fact that it's not popular with most of the population, and that it completely poops all over the fact that both Islam and Jewish faith/law puts the needs of the mother first, in the case of the Torah it's an explicit requirement that you protect the mother and obey her will in the matter (something they settled somewhere over a thousand years ago). Apparently a number of Jewish groups are probably going to be pushing legal challenges to the bans based on the fact that it's suppressing their religious beliefs, not that that will do any good, as the current US supreme court is all about Religious Freedom but only when it applies to the the one they follow and think the US should force everyone else to do the same.
**I can't remember the figures, but something like 1% of pregnancies result in an ectopic pregnancy and are usually only discovered at the first ultrasound, which is usually after the first 6 weeks.