Brief Answer: Please, get consulted and examined! Detailed Answer: Hi and thank you so much for this query. I am so sorry to hear about this constantly feeling of fatigue. Your symptoms are very non specific and making a call as to what the exact cause is without further information would be very unlikely. True, these symptoms could be due to anemia just like low thyroid, dehydration, no known cause, normal mood changes, etc. I will suggest that you get consulted for a proper physical examination and a basic blood test done to see if these symptoms are suggestive of any possible underlying disease condition. Specific advice and treatment options would be offered depending on the exact findings on examination and maybe laboratory testing. Iron causes black and pellets stool alongside bloating. This is the most likely cause of the changes you have noticed with your stools. Taking iron is good but not all anemia is caused by iron deficiency if this were to be anemia. This is why getting examined doing some basic tests to understand what is going on before proposing intervention strategies would be the best way to go. A primary healthcare physician would be able to look into this. I hope this helps and provides enough information to help you continue the search for answers and a solution to your symptoms. Feel free to ask for more clarification and information if need be. I wish you well. Thanks. Dr. Ivo, MD.

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