Period in 5 days is it normal???

Hey guys! I need a bit of guidance here. So I was on birth control pills and I stopped taking it after 4 days of finishing my period because it started giving me severe acne. And not it’s not even been 20 days and I got my periods again. Is it something I have to be worried about. I tried researching on it and I found out it’s completely normal for that to happen if birth control pills have been stopped mid way.

To mention : I have been taking birth control pills for more than a year now

Also having a brown mucus discharge along with it