Had chronic fatigue/fibromyalgia 15-20 yrs ago, & would blood test now show this?

My older daughter, who won't speak to me now, says that I only give the excuse of not being there for her more when she was young, by pretending to "claim" I had chronic fatigue and fibromyalgia. She says I am a liar. I wasn't at all, I was very ill, and much of the stress that kept me ill was from her very difficult, multi-handicapped sister. She had 7 diagnoses. Anyway, I was wondering if the new blood tests for chronic fatigue might show up that I really did have these illnesses. I am mostly better today, but I still have some lingering tiredness, soreness, etc.