I'm sorry you are having to go through this... relationship issues are never fun.
You are right, you need to find an outlet... get out with friends and family more, get some daily exercise (outdoors if possible), spend time on a hobby or start one, rent some movies, walk during a break at work, the point is you may have to force yourself to do things, but it is important that you do so.
Again, you have made it clear to her how you feel and that you want the relationship to continue... there is not much more you can do. Respond when she texts or e-mail you... maybe let her know you are thinking about her every now and then, if you want... send her flowers with a nice note and let her know you are looking forward to hearing from her if you feel you need to do something more right now, but then try your best to not push it. The not knowing is difficult to be sure, but the ball really is in her court now.