Relax, if it is thyroid, the best thing is that it is controlled with medication. In MY case, I had the graves as well and had to have my thyroid removed. Not so bad, i pop a pill once a day!
Now, the hair thing, seeing as one of my best features was my long THICK brown hair, losing it and having very thin hair was awful for me. Mine got very thin and would break easily. I was clogging the shower drains because so much would come out when I washed my hair! There was literally hair everywhere! The good news is that once medicated properly it does grow back. I finally have my thick hair again! Don't worry, worry will just make you feel worse. Keep up the excerise and weights, eat 5-6 healthy meals a day and don't try to fill up on empty calories to gain weight because that is not good for your health! Good Luck and keep us posted!
Children are Precious.....Lets keep them Safe!!!