Unhealthy and Sick of it

Hey ladies! A year ago, and got married, started birth control, moved to Seattle from a small town, and changed jobs twice. In the space of a year, I gained about 40 pounds, starting when I got the birth control shot. I desperately want to get back to a healthy me, but am having a heck of a hard time. Tiny cooler for a fridge, extremely busy and stressful schedule, and almost no time to cook make eating healthy and exercising hard to do. Does anybody have some tips for a crazy busy woman? Thanks a bunch!