It is possible to feel unhappy, tired and depressed because i have hypotyroid and i don't take any medicine? can the physical stress worse that?

Untreated: Hypothyroidism can be a cause of depression. If this is the case- i would wish for you that you would get appropriate treatment soon. I don't understand the second part of your question. Take care.

Yes: Depression is common with hypothyroidism. Here is some good information: http://www.Webmd.Com/depression/guide/depression-the-thyroid-and-hormones there is help for what you are going through. Best wishes and good luck.