Advice after being of the Depo shot


I had my first miscarriage in February of 2017 and tried ttc ever since, my doctor had me get on the depo shot the week of January 25th of this year to help me gain weight which it worked. But me and my boyfriend decided to try again for another baby and so i never got the second depo shot in April. I'm curious how long will it take for my cycle to become regular again. April 28th through the 30th I had light pink spotting. May 17th through the 25th I had light brown spotting and this month AF is suppose to start June 14th.

Need some advice plzs!!!!