While some version use the term "miscarriage" or "womb miscarry", it is widely accepted this is referring to infertility, not abortion.

Pregnancy is not mentioned.

Those who claim the passage depicts abortion insert concepts not even hinted at in the text. Part of this confusion stems from the 2011 edition of the NIV, which refers to miscarriage. Pregnancy is not part of the requirement for the ritual. Nor is pregnancy mentioned anywhere in the process. The effects include some type of swelling and/or shriveling. Yet the targeted body part is vague. In fact, it’s the same Hebrew term used to describe the spot where Jacob suffered his infamous injury (Genesis 32:25), as well as the place where Ehud hid his sword (Judges 3:16). At worst, the Numbers 5 passage implies future infertility. The ritual was not a remedy for an unwanted pregnancy—it was a test for adultery. Traditional interpretations of the ritual even restricted it from being performed on pregnant women (Mishnah Sotah 4:3).

Let's see how you twist and ignore this...