I am a 50 yr old female (last menstrual cycle 2007) with all the symptoms of Hypothyroidism, extreme hair loss (50% loss across forehead area), excessive weight gain (30 lbs in the last 6 months), fatigue, muscle aches weakness and constipation. All labs for TSH have come back normal as well as B-12, Folic Acid, vitamin D and iron all normal. Very concerned and starting to get really depressed.