Without trying to start an abortion discussion, I think its safe to say that some people consider abortion part of women's rights, and other people consider access to abortion not to be a part of women's rights.
Oddly, some of the early feminists thought that abortions were a sign of male domination over women, while now, most feminists have the opposite belief.
Quoting from wikipedia:
Elizabeth Cady Stanton termed abortion infanticide, while Emma Goldman bemoaned the high rate of abortion as "appalling" and "beyond belief" (although the latter firmly supported the right of women to have abortions). Mattie Brinkerhoff characterized abortion as destroying the life of an unborn child, and evidence that a woman "has been greatly wronged." Victoria Woodhull, the first female US presidential candidate, affirmed that "[t]he rights of children as individuals begin while yet they remain the foetus." Caroline Elizabeth Sarah Norton wrote of "infant butcheries" and "ante-natal child murder," describing abortion as interfering with "the right of the unborn to be born." Mary Wollstonecraft suggested outright that abortion violated the laws of nature and Matilda Joslyn Gage suggested it was one of the greatest wrongs against women and that it was committed by men. Alice Paul, author of the first Equal Rights Amendment in 1923, said simply "Abortion is the ultimate exploitation of women." Susan B. Anthony referred to it as "child murder" and said famously: "Guilty? Yes. No matter what the motive, love of ease, or a desire to save from suffering the unborn innocent, the woman is awfully guilty who commits the deed. It will burden her conscience in life, it will burden her soul in death; But oh, thrice guilty is he who drove her to the desperation which impelled her to the crime!"