What Causes Tiredness With Severe Hair Loss ?

I am 34 year old female with a slight/petit build. I am exhorsted all the time from the time i get up to the moment i go to bed. My hair is falling out and I get headaches all the time. I got a blood test done to make sure i wasn't lacking in anything in my diet and all came up great. I am also producing milk from my left boob and had an x-ray done on the back of my neck to check that some gland was not over doing the hormones in my body but that came up all clear. I AM NOT PREGNANT. This has been going on for over a year and the exhorstion is getting extreme. I cannot find a doctor that will investigate longer then one test and I'm totally frustrated because I know this isn't normal to feel this way or to be producing milk. I had a thyroid test done which came back a little on the low side but still within range. It seems where i live i need to know the name of my problem before asking for the appropriate test to be done. I'm not a doctor & so have no idea what i should be testing for. Any suggestions?