I think she was pregnant. Her idea of “fertility awareness” was probably based on the timing of her period rather than actual knowledge of ovulation, which is a good way to get pregnant. She says she took pregnancy tests all the time, rather neurotically.
She works in an abortion clinic, positive pregnancy strips are to be found in the trash, so showing one would not be proof.
She says she decided to film a surgical abortion, rather than a medical, so she had to wait a couple weeks, which allowed the embryo to develop to the point where it would be visible on ultrasound.
There is a great sadness in her face in the parts video made after the abortion, an emptiness, that is at odds with her words, that she seems to be not even aware of, but it is the slack face of grief.
In fact, I think it’s possible she became pregnant intentionally/semi-intentionally, in order to undergo this experience (emotional experience to draw on - she’s an actress), in order to have something in common with the women she works with, in order to make this video, both for the propaganda value and the celebrity.
She may even have felt some guilt that she was talking women into something she herself had never done.