Bouncing back from the depo shot

Ok so I only took 2 depo shots, last one was taken in January which fizzled out in April. Decided to stop because it messed up my hormones & emotions but ultimately my weight. I gained 30 lbs over the course of 6 months. It's now been 6 months since the depo has worn off but my body still has not bounced back. I eat 3 meals a day (well most days) and have healthy snacks in between meals. I intake veggies, fruits and try to cut down on the junk food. I'm a very busy college student who works as well so not much time for exercise (especially since constantly being on the go reaks havoc on my body). So I was hoping to get some advice from anyone who has previously had the depo shot so that maybe I can get back to where I was before or somewhat close. Thanks in advance!!