If you took plan b 5 days before ovulation would that effect ovulation or what would it do too ovulation?

Nobody can tell...: Nobody can tell for sure what happens in one woman if she takes Plan B five days before ovulation. She has no way of knowing exactly which hour of which day she will ovulate (it is one moment in time), with or without Plan B. Also, Plan B is just what it's name says: Plan "B". That means she must have a Plan "A", a really reliable method, whether it be condoms, an IUD, or birth control pills.