I can’t say if it was or was not a miscarriage in this case. That being said, most of us, myself until recently, are not aware that the BC pill can actually cause an abortion. There are 3 ways the pill works…the first two prevent conception, but they don’t always work then the third will happen. The third will allow a baby to be conceived and then cause the uterus to become hostile to the baby and basically kick her out. These crazy birth controls sometimes are just not worth it…they not only can do that they can harm us too..ie bone loss, blood clots, stroke risks, heart problems…too scary for me. My husband and I use NFP (Natural Family Planning)