Thanks for consulting. I have carefully worked through your case, and I can realize your health worries. Being your physician, I assure you not to worry as I will take care all of your medical concerns. the current tiredness may be because you feel sleepy. sleeping in not a bad thing almost most of the development and repairing work of our body is carried out during the sleep. there can be no association made with the blood transfusion one week back. but may be it can be cause by the pain killer medication which you might be taking for your pain. certain pain killer cause sedation. Hope it helps. If you need further, detailed and quick assistance related to any health issues in future, feel free to ask me a question directly from my profile. Have a wonderful time ahead. Best Regards! Dr. Arunmozhi varman