Probably wouldn't hurt to take an OTC thyroid supplement. Other things that affect hair are vitamin D and iron, if you are not getting enough. What are you doing to release/relieve the stress? Finding some peace/relaxation would be best.
B Complex supplements are supposed to help with the impact of stress on the body. For the past few years, I was taking B Complex at a certain time of year when I was very stressed at work. Noticed my hairloss reduced by almost half on wash days (when I lose the most hair). I now take a lower dose B Complex all year long and still see the reduced hair loss.