Stress can be a major factor in hair conditions. When your body is feeling something, it will let you know some how and hair can definitely be affected. ...More >
The worst think you can do is worry about it, it could make it worse.
But please remember you hair can change in texture, colour and amount due to stress or illness. I would recommend seeing a good Tricologist (Hair Expert) there are some on the site here. But some one needs to see you personally.
Go visit them and they will be able to give you excellent advice and remove your worries