There is no "right" to own a house in the Constitution, there is no right to attend a movie in the Constitution, there is no right to eat Big Macs in the Constitution.
The Constitution is not an enumeration of our rights!
Go back to FR Civics 101.
I don't believe that there is a right to have an abortion, but your argument is flawed in the fact that our rights are not just the ones that are listed in the Constitution.