Birth control and late period

So I had to stop taking my birth cOntrol due to some crazy weird things y'all probably don't want to hear about. My boyfriend and I are very serious, and yes sexually active. I've never had a period later than two days, and I am now seven days late. I am wondering if this can be caused by the fact that this would be my first period again off birth control pills.
Please, if anybody has experienced this, let me know! Thank you! :)