I took postinor 2 on monday and i have unprotected sex on wednessday can i take it again?

"Deja vu": Deja vu, all over again! Unprotected sex is a sure fire way to become pregnant without any form of contraception. A Monday/Wednesday sex diet with the use of Plan B is a "iffy" way to avoid unintended pregnancy. Yes, you can use Plan B again, but please consider pro-active contraception use in the future if you are not already pregnant this cycle.