I have been experiencing constant tiredness, fatigue, and a significant lack of energy lately. I was taking medication for anxiety from January this year, but I stopped taking it around June. Since then, I have been feeling increasingly low on energy, and even routine daily activities sometimes feel physically exhausting and require me to push myself considerably. I often feel drained without doing much physical activity and am concerned about why this is happening. I have also experienced significant unintentional weight loss over the past several months. I would like to understand what could be causing these symptoms and whether I need any blood tests or other medical evaluation.