I had leukemia fears a few weeks ago and I literally cannot remember why. It was probably just me freaking out over a random cancer; I probably thought since you hear a lot about kids with leukemia if I had cancer it'd be that.
I'm pretty sure lukemia causes bruising and frequent sickness. I remember freaking out because I had a random bruise or because I had an infection. Chest pain, fatigue, and dizziness are all anxiety symptoms as well.