Whether Roe vs. Wade was correct or incorrect is a matter of opinion; it is, however settled law supported by precedent. While one may disagree with the decision, it is the law of the land. The point is perhaps best illustrated by Chief Justice Charles Evans Hughes, who said "The Constitution is what the judges say it is."
In Roe vs. Wade the Supreme Court held that the right to privacy and the guarantee of due process under the Fourteenth Amendment allows a woman the right to an abortion; however as with other constitutional rights, this one must be balanced against the rights of the unborn child, the right of the state to protect the woman's health and the unborn child. The Court further ruled that the longer the length of the pregnancy, the greater the interest of the state in regulating the right to terminate that pregnancy. Under the original decision, a woman had an absolute right to an abortion during her first trimester of pregnancy, and no right during the third; the second trimester was to be determined by balancing the interests of the state and the mother.
In a later decision, the Court rejected the trimester rule in favor of a "viability rule, stating that the right to abortion existed until such time as the child was viable, meaning
potentially able to live outside the mother's womb, albeit with artificial aid,
Again, one may disagree with the decision on moral, legal or constitutional grounds; however it is settled law and to that extent is "correct."