Depo shot

So I decided to get off the shot and let my body go back to normal I’ve almost had it for two years now but I decided to not get my last injection and go back to normal and I’ve read that it takes 10-22 months to go back to normal fertility but it’s only been a month and an week since I missed the last injection date and my period is back like normal is it weird that it came back so fast because I heard people wait way longer than I did for Their periods to return my shot was supposed to be on may 31 and my period started on July 2nd