Emergency contraceptive

I had unprotected sex during my fertile window 2 days before it ended. It’s not 2 days after and I have the EC. I’m second guessing taking it because 1 I might might not get pregnant 50/50 , and 2 it’s the strongest form called Ella and even if the sperm met an egg it will prevent the egg from attaching to my wall and I feel like that’s almost abortion ? Everyone has different opinions. But as soon as sperm meets egg right away it has its gender already and I’m starting to feel like that’s almost abortion in a way. ( came from a Christian background) . I honestly hate taking any contraceptives because I’ve taken 2 in my lifetime and it really fucks me up emotionally and physically (when period hits)