Since I was specifically mentioned in the OP, I should probably give my views.
I have a semi-"Social Contract" view of human rights. In my view, people automatically have the right to do whatever the please until it is explained how their actions might interfere with the reasonable expectations or enjoyment of rights of other people.
So, people automatically have the right to have sex with whoever they want, whenever they want, until it is explained how sex with a particular person under particular circumstances harms another person.
Likewise, a woman has the right to terminate a pregnancy until it can be shown that there is a person who has legitimate expectations that the pregnancy be carried to term, or there is a person whose rights will be violated by the termination.
So far, the anti-abortion side has failed to convince me that there are people whose rights or expectations are violated by the abortion.
Kings were put to death long before 21 January 1793. But regicides of earlier times and their followers were interested in attacking the person, not the principle, of the king. They wanted another king, and that was all. It never occurred to them that the throne could remain empty forever. -- Albert Camus