Fatigue

Of late i am fatigued so much that i barely wish to stand for 5 minutes. A trip to kitchen feels so exhausting that i rather stay in bed for few more hours than chosing to go and eat food. I don't feel a lot of joint pain. Even my blood work is fine for the past few days. Its just this exhaustion is taking a toll on me. I don't know what to tell my rheumatologist since all my blood work are fine and there is no substantial pain. Also i think i have grown a bad habit of saying i am fine when i am clearly not. It started with the thought not to worry my family but it has grown on me so much that i regret now.
Any suggestions or comments are welcomed.