[Note: for purposes of this thought exercise, "woman" is defined in terms not of birth certificate or appearance or self-identification, but of the physical ability to get pregnant.]
A fetus, embryo, blastula, zygote, or fertilized egg is a full human being with the same rights as one who's already been born. Any intentional termination of the pregnancy, even days or hours after conception, is therefore murder. No "exceptions for rape or incest", because we wouldn't consider a child fair game for murder just because of its parentage or the circumstances of its conception. Likewise, no exceptions for crippling or life-threatening genetic defects, unless we as a society would be willing to actively kill a born child for having those defects. Even an "exception to save the life of the mother" is dubious: it amounts to choosing which of two human beings to kill. Terminating a pregnancy to save the life of the mother would be permissible only if the alternative was both mother and child dying; in that circumstance you're choosing to kill one person rather than two. In all these cases, it seems clear that both the mother and any medical personnel involved would be criminally liable.
What about unintentional termination or harm? It could be argued that conduct (e.g. strenuous exercise) that accidentally leads to the termination of a pregnancy is manslaughter or negligent homicide -- which typically get a lighter sentence but are still felonies. Conduct that leads, or could reasonably be expected to lead, to harm to the fetus, such as drinking alcohol while pregnant, is reckless endangerment of a minor, and could again be punished under the criminal code. Even allowing a spontaneous miscarriage without taking heroic measures to prevent it could be considered criminal medical malpractice -- negligently allowing a human to die who could have been saved.
Once you're pregnant, you no longer have full jurisdiction over your own body, because you share it with another human being who has the same rights as you, but no decision-making power. Indeed, if there's a realistic chance you might be pregnant, you should probably (to stay on the safe side) assume you are. In short, if you're a sexually active female of reproductive age, you have less autonomy than a sexually active male of the same age. Unfair, yes, but that's just the way the world is -- like menstruation.
A woman who has sex is giving up part of her autonomy for at least a few months until she's sure she isn't pregnant, and possibly for years to come. A man who has sex is not giving up anything unless it turns out she is pregnant and he's the father. So having sex is a much bigger decision for a woman than for a man. A woman who has sex "lightly" is therefore irresponsible and morally suspect, while a man who has sex "lightly" is normal.
If you're female and want to retain independence and autonomy, you need to avoid sex, at least any form of sex that could lead to pregnancy. Males, of course, don't face this dilemma -- indeed, they can express independence and autonomy through sex. Again, it's unfair, but it's just the way God made us: women have to choose between (hetero) sex and autonomy, while men get both at once. If you've chosen (or been forced) to live on the "sex" side of the divide rather than the "autonomy" side, your every action henceforth has to be assessed from your perspective as a growth medium.
If a woman is going to willingly risk her autonomy in order to have sex, she'd better get something in return, like financial security, so it is appropriate to consider most (hetero-)sexually active women as prostitutes, although the "respectable" ones get to call it "an advantageous marriage".
Which implies that in the natural order of things, there are two kinds of women: autonomous but (heterosexually) celibate ones, and sexually active ones financially supported by their male sex partner(s). Men can be autonomous, sexual, and financially independent, in any combination they wish, because these are orthogonal questions for them. If they don't want to take on the long-term financial responsibility for a wife and children (or if they get bored with their long-term partner), they can get their sex a la carte from short-term prostitutes and mistresses instead. Again: unfair, but that's just the way things are.
For women on the "sex" track, their main saleable assets (to be exchanged for financial security) are sex and physical attractiveness; a man's main saleable asset (to be exchanged for reliable access to sex) is his money-making ability. So it is entirely appropriate for women to be extremely concerned with physical appearance, and to spend whatever money (or eyelash-batting) they have on clothes, makeup, cosmetic surgery, etc, while it is entirely appropriate for men to concentrate their energy on their careers. Men earn money, men give it to women in exchange for sex, and women spend it on their appearance so they can keep getting paid for sex. That's the natural order of things; objecting to this model makes as much sense as objecting to the law of gravity.
And it's understandable that employers would be reluctant to hire women, or to promote women, or to pay them as much as a man: this particular woman might be on the "autonomy" track now, but both she and her employer know that she has another option, and could switch to the "sex" track at any time. Since she doesn't really depend on her job, you can expect her to take it less seriously than a man would, and her employer will accordingly take her less seriously.
In short, we can live in a society in which women have roughly the same rights and freedoms as men, or we can live in a society in which zygotes have roughly the same rights and freedoms as born children. We cannot have both.
Our new President and Vice President, in their different ways, have both made clear that they prefer the latter. The President has had three wives, whom he married at the fertile ages of 28, 30, and 35 respectively, and (I think) cheated publicly and repeatedly on all three of them, because he is just that oversexed. Their role was to be beautiful and fashionable and sexy and spend the money he made, as a sort of scoreboard to show off his supreme manliness (including, but not limited to, earning capacity). He's made abundantly clear that he values women primarily for physical attractiveness; the worst cut-down he can think of for a woman is to insult her appearance. Grown women are unimportant except as sex objects. Meanwhile, the Vice President has taken every opportunity in his career to assert the importance of unborn children from the moment of conception on, and to keep women in their rightful places as sex partners, housekeepers, and child-rearers. In short, zygotes are more important and have more rights than grown women.
Most of the conclusions I've drawn above aren't really about abortion: they're really about the equation of sex with pregnancy. Anything that breaks the "God-given" connection between sex and pregnancy -- whether abortion, contraception, or even homosexuality -- is a threat to an equally "God-given" social model built on the assumption that women can't have sex without risking their autonomy for months or years to come, and men can.