The "Fundamental" Constitutional right to an abortion (where is that in the Constitution, again?) can only be exercised if a woman registers with local government, passes a written and vision test, undergoes DNA testing on her private parts, must have the abortion in her home, and must wear a locked chastity belt.
Sounds like acceptable restrictions to me.
It is in the "Emanations and Penumbra" section, right underneath the "Freedom from Religion" clause.
If you can't find it, you must be looking in an old copy of the Constitution. It is in the "New and Improved" Constitution, which was adopted by the courts in the mid 1960s.