Late Period

So, my period is pretty darn late. It used to be where my periods would come super early, like every two weeks and last for about a week. Which obviously sucked. So I went on birth control to help regulate it, which worked. But my body was having bad side affects because of the birth control so I quit a few months ago and it’s been pretty normal. But my period was supposed to come last week, 6 days ago to be exact. Should I be worried? Or is this normal?