I'm sorry you're not feeling well right now. Making the decision to apply for disability isn't always easy, but it's often the first step to healing.

How long ago did you apply? People are getting approved much sooner than they used to. At this point, since you've already filed, there isn't much more an attorney could do. If you get denied, then I would strongly consider hiring one for the appeals process. Hang in there.
If you do start working again before you're approved, they will deny your claim. Once you're approved and have been receiving benefits for a couple of years, then they have an elaborate work incentive system you can go back to work with.