Irregular Periods after Birth control 😩

Lindsey
So, I stopped taking my birth control back in March... Ever since, my periods have been irregular. Usually about 2-5 days late each month and only lasting about 2-3 days. I know everyone is different... But about how long does it normally take for your body to get regular again?? Or will should I just assume I'm always going to late? I log symptoms and keep up with my app on a daily basis. I also get the typical cramps, backache, moodiness in the week or so before my "supposed to be" period. So I'm all out of whack!  And at what point in my lateness should I take a pregnancy test? So many questions. 
Thanks in advance!!Â