I think your problem is easily fixed. Just slowly fixing it at the problem is if you know where to go to work early and have time to eat. Why do not you carry it in your pocket bread. So you can eat when you feel hungry. For the exercise If I were you I will try to take time for the gym three days a week only. And the last issue I suggest you give interrupt fruits and vegetables regularly. It can make your digestive system better. If not successful, I think you should go to the doctor to discuss the problem.