Just stress or something more?

Sounds like you need to prioritize your schedule.You also show some symptoms of diabetes.The lose of weight,constant thirst and urination can all fall in this category, especially if you have anyone in your family with it.If you take your time and read through your question you'll see that your just going to have to do without something.Naturally your stressed out with no sleep. That alone will keep your body from getting a natural rhythm.We all need some routine in our lives to thrive,slow down and enjoy life.