is it normal to have no period after stopping birth control?

Jaclyn
I did not take my birth control this month as I couldn't afford it, and did not want to start it late when I could afford it. So I decided I would just start back up after my period. But my period has yet to come... I haven't been keeping track because I normally know when it'll come with my birth control. I feel like it's definitely late though. I don't know the exact date of my last period, but I believe it was early to mid-August. I don't think I'm pregnant, as I don't have any symptoms and have been having safe sex. Is it possible not taking my birth control just caused me to not get my period?