these combination of symptoms are generally due to thyroid hormone imbalance or liver disorder. if all your blood test are normal as you have mentioned here we advise you to get a repeat test done for thyroid and liver functions with some good laboratory. meanwhile you can start with some good multivitamin after consulting your doctor.
i have hair loss and more and more my eyes are getting yellow weight gain and just generally feel sluggish. . i've had blood work done and nothing was found.