Abortion was legal in the United States when we had the same Constitution we have now. Nothing in the Constitution plus the amendments mentions the word "abortion." Consequently, the Constitution and the amendments do not protect abortion. The Roe vs Wade Decision was a judicial usurpation of legislative prerogatives.
Abortion was legal in the 1700 and 1800s
States can protect their citizens from unsafe medical procedures and in the 1900s when states first started banning abortions. They were unsafe for the woman. By the 1970s abortions were safer for the woman than pregnancy and childbirth therefore states can no longer ban abortions for safety reasons.
You are mistaken the decision was not judicial usurpation of legislative prerogatives.
The Supreme Court Justice’s not only looked at the Constitution before deciding Roe they looked at the many precedents regarding privacy before Roe was decided.
In fact it would be extremely hard to overturn Roe without also striking down the precedents of right to privacy cases before Roe including cases regarding child rearing.
The following Surpreme Court decisions most likely would become dismantled if Roe v Wade were overturned and that just is not going to happen.
Weems v. United States (1910)
In a case from the Philippines, the Supreme Court finds that the definition of "cruel and unusual punishment" is not limited to what the authors of the Constitution understood under that concept.
Meyer v. Nebraska (1923)
A case ruling that parents may decide for themselves if and when their children may learn a foreign language, based upon a fundamental liberty interest individuals have in the family unit.
Pierce v. Society of Sisters (1925)
A case deciding that parents may not be forced to send their children to public rather than private schools, based on the idea that, once again, parents have a fundamental liberty in deciding what happens to their children.
Olmstead v. United States (1928)
The court decides that wire tapping is legal, no matter what the reason or motivation, because it is not expressly prohibited in the Constitution. Justice Brandeis' dissent, however, lays the groundwork for future understandings of privacy.
Skinner v. Oklahoma (1942)
An Oklahoma law providing for the sterilization of people found to be "habitual criminals" is struck down, based on idea that all people have a fundamental right to make their own choices about marriage and procreation.
Tileston v. Ullman (1943) & Poe v. Ullman (1961)
The Court refuses to hear a case on Connecticut laws prohibiting the sale of contraceptives because no one can demonstrate they have been harmed. Harlan's dissent in Poe, however, explains why the case should be reviewed and why fundamental privacy interests are at stake.
Griswold v. Connecticut (1965)
Connecticut's laws against distribution of contraceptives and contraceptive information to married couples are struck down, with the Court relying on earlier precedent involving the rights of people to make decisions about their families and procreation as a legitimate sphere of privacy.
Loving v. Virginia (1967)
Virginia law against interracial marriages is struck down, with the Court once again declaring that marriage is a "fundamental civil right" and that decisions in this arena are not those with which the State can interefere unless they have good cause.
Eisenstadt v. Baird (1972)
The right of people to have and know about contraceptives is expanded to unmarried couples, because the right of people to make such decisions exists due not simply to the nature of the marriage relationship. Instead, it is also due to the fact that it is individuals making these decisions, and as such the government has no business making it for them, regardless of their marital status.
Roe v. Wade (1973)
The landmark decision which established that women have a basic right to have an abortion, this was based in many ways upon the earlier decisions above. Through the above cases, the Supreme Court developed the idea that the Constitution protects a person's to privacy, particularly when it comes to matters involving children and procreation.