it seems that cfsers in the early stages or less severe stages of ME dont get PEM or realise they get it, my thoughts are that initially we are fitter so dont realise the PEM as much. I think that also the good diet you follow and being proactive with your health pre fatigue has helped you alot. Although it sounds like you need to dig deeper for other possible causes of fatigue. I also in the early stages of ME too took several months off training as i thought i also may have had over training syndrome, the rest didnt really help so overtraining syndrome was discounted. Its a bugger when u cant train the way u use too, i know training use to be my me time to get away from the world, that good endorphin release from training, man i miss it. cheers!!!