Sorry to hear of this stressful situation.
As a couple of others have said, it's a really good idea to get checked out (blood tests etc.) first to check for any underlying issues such as a hypothyroid condition. As an example, I've been recently diagnosed with Hashimoto's thyroiditis & one of the signs is accelerated hair loss - so if your condition is caused by something underlying, it's best to treat the cause if possible, not just the symptoms.
Good luck x