Going on a trip on wed, ended placebo birth control pills 8 days ago with min brown discharge. will period come during new pack?

Difficult to tell: Birth control pills make women have lighter and shorter periods - sometimes no period at all. In this scenario your period should not come, after you started a new pack. Not knowing more details about the situation makes it difficult to gauge, what may happen. Neither can pregnancy be excluded - it may be an idea to take a pregnancy test, to at least have the peace of mind of not being pregnant.