Breathing excercise
Hi Megan,
A friend showed me this, it sounds like a weird way to workout your stomach, but give it a try and see what you think. It's a breathing exercise.
Stand normally. Breathe in slowly and fully, but keep your stomach flat (don't let it expand as it usually does). By the end of your inhalation, you should feel your abs and chest stretching. As you exhale, flex your abs as hard as you can.
When you go back to inhaling, make sure you don't let your stomach expand.
I know this isn't traditional, but do at least 10 of these full breaths when you wake up, and during the day whenever you can. I used to do them on the bus, at work, basically anywhere.
Let us know if you notice a difference.