Irregular periods

Hi! I was curious how long it took your period to regulate after you got off BC. I've been off it since April and some month it's 22 days, 28, 34 days between periods. Also some months I only bleed for 5 days, while other months I'll bleed for 7, 10, 14 days. Ack.
I plan on going to the dr.  We're going to start TTC in the next month or two, but I was just curious how long it took all of you. I am 32.