The two most important things you should do are get more sleep (with the amount you work, try to get at least 8, if not 10), and eat more. I'm talking, 3000, 4000 calories more. Hell, if it takes eating a pizza every other day, do it, I don't think you're at the point where you can be picky about calories, as long as it's not all donuts and candy.
The next steps would be to stop overtraining. Do a three times a week, full body workout that lasts about 45-60 minutes. Choose around 4 movements, two lower body, two upper body, to do each day. Stick to the big compound lifts, but don't fuck up your nervous system. You've only been training for a year and a half. I think anyone will call you a newbie still. I know that I will never stop being a newbie until I have 4-5 years under my belt.
And finally, don't worry so much. I'm sure with less stress from the workouts, more sleep, and more energy from the food, this won't be as big of a problem. In fact, I honestly believe with proper diet and sleep, stress practically does not exist. But until then, just relax and understand that life isn't all lifting.
we're pulling for you, I'm sure many can sympathize with where you're at. And finally, don't be a pussy. T-Men overcome. Do just that.
Good luck man.