The last week/row of pills in a 28-day birth control pack are just placebos. You don’t even have to take them. They do not have hormones in them, which is why you menstruate during that week. You are not more fertile or less protected during this week either.
They only way you can have a higher chance of becoming pregnant while on the pill is if you don’t take it at the same time everyday. Manufacturers actually put in the last week of placebo pills to keep women in the routine of popping the birth control continuously.
