I stopped taking the Depo shots in Feb 2015, after ive been on it for 3 years, I didn't have a period until July. I bled for a whole month, stopped for 2 weeks and then began again. It's been constant month on 2 weeks off. I talked to my doctor who informed me that I can take up to 18 months for my cycles to regulate. My question is, is this normal, or should I seek answers with a different OBGYN?