So I have huge question on fertility that I am having trouble understanding because I am getting different answers. My birth control method has been fertility tracking. It has worked for over 5 years, I am 20 now. I am usually good at tracking it so I know when to have sex because I don’t like condoms and I’m allergic to birth control. My question is can someone get pregnant 3-2 days before your period arrives and are fertility days the only time you can conceive?