I Would Not Support Directly Acting to Prevent an Embryo From Implanting

If there was moral certainty, you could prevent ovulation or fertilization. I would not support an act that is intended to prevent the implantation of an embryo. It could be the case that you could do something morally good where you foresee it prevents implantation, but you don't intend it. For example, it may be the reason that women have infertile because when they breastfeed, it thins the lining of their endometrium. That may prevent embryos from implanting. However, following double effect, this is moral because you're engaged in a good act, nourishing of a child. You foresee but do not intend for the other embryos to not implant.