I got the depo shot back in March, I was due for another shot in June. I didn't get it because I'm not having sex at the moment, plus as soon as I got on it my depression got worse. When I was on it my period was 2 weeks long, but mostly brown discharge. I haven't had my period in two months now, I am most definitely not pregnant. I'm sure it'll come back eventually, but does the depo shot cause fertility issues?