Conceptions is really a whole process with a series of steps. There has to be a egg present, which during ovulation your egg will be present. Then, you will have to do the fun part of trying to conceive and that is have sex. If one of the sperm manage to make it to your ovary and penetrate your egg will be fertilized. Then the implantation process will start approximately 24 hours after fertilization. Basically, what happens during conception is first your egg is fertilized by sperm, then implantation will start.