Can you tell me if i could get pregnant during the placebo pill week of birth control?

Yes: Statistically it's not likley that you would get pregnant if you're taking the pill as prescribed and are consistent with when you take it. But there is a very small failure rate of the birth control pill, so yes a woman could get pregnant while on the pill. Ovulation occurs usually between days 11-17 (day 14 +/- 3 days) so by the time you would be taking the placebo pills, day 21, it's unlikely.