Of course CLL causes fatigue! I guess it’s worth a try to get another opinion to see if there is more going on! Being tired all the time is how I got my diagnoses in 2014 but naps really help me if I’m really tired

Although you are at stage 0, which is great, you have been hit with a diagnosis which can take a toll on you emotionally. That is energy draining! Do you have any other things going on like arthritis or fibromyalgia? Lots of things can cause fatigue. Like you, I am at stage 0, and have probably had CLL since 2014 but didn't know it until 2020. I have slightly elevated lymphocytes which my PCP zeroed in on. No other symptoms except chronic fatigue which I have had for a long time. My labs are otherwise normal. What I do have is Crohn's Disease, fibromyalgia, glaucoma, low back pain from 5 spinal fusions, and sleep apnea. These all can cause fatigue! I sound like a mess but fortunately these chronic conditions won't kill me! They are annoying.
The weather right now is pretty debilitating for many people since it has been hot all summer. (I live in Phoenix.) Be sure to stay hydrated and eat fruits, veggies and lean meat for protein. Stretching exercise can help aches and pains!
Take care!

I think it was normal. But I will check it out. Thank you.

Have they looked to see if you have anemia?

Anemia causes fatigue, muscle soreness, chest pains, rapid heart beat. Fix is infusions of iron, in my case, since I don't absorb iron from food. Check it out with a blood test looking for your iron levels.