Just wanted to agree with Laura that it may possibly be a thyroid problem?? This just happened to me after the birth of my second son. I started losing a lot of hair, which I know is totally normal after childbirth, but it seemed excessive compared to the hairloss after my first son. So I had by TSH level checked and it was 4.777 (hypothyroidism). The hairloss was the only symptom I had — not really any fatigue (at least not more than what you’d expect with having two in diapers, LOL!)