What will happen if i took lady pills mistakenly, do i have a chance to get pregnant?

Yes?: If i understand your question, you want to know if birth control pills are not taken according to directions, is the chance of an unwanted pregnancy increased? The answer is yes. By how much depends on just how off you were in taking them.

yes: Assuming your lady pills are birth control pills, if you took them incorrectly you could get pregnant.