How long does it take to regulated after quitting birth control?

Crystal

I've been off the pill for 4 months. I started bleeding April 12th. I bled til May 19th it stopped for a week and then May 27th started back and i am currently on 22 days of this. I went to ER weds and they took blood and did an internal ultrasound where they went inside to check for cysts and fibroids. Well blood levels came back good and the ultrasound came back great so i don't understand what's causing this bleeding. If anyone has or experienced this after stopping birth control, how long did it take to get regulated and if there is anything i can do to help get regulated? Getting so annoyed and stressed. The last pic is the birth control i was taking.