yes Villette i have to agree with hockeymoms advice...
Stress.
a friend of mine sister hair fell out in clumps and usually left random patches of bald spots. I forget what the disease is called but one thing she was told it was due to was major stress.
you need to learn to relax and meditate. Im not sure if she took any Rx. but she wore a wig for about 2 years but now she has her full set of hair so it does get better.
Good luck .... just take care of yourself..
i know its easier said than done under ur circumstances but you have to try