Get the book _From Fatigued to Fantastic_. The "standard" tests your doctor would ordinarily order won't show jack. (See my comment below for more specific test information.) This book is the single best resource I have found. Even if you don't technically have full-blown CFS, it will probably be able to help you.
The five things that made the biggest difference in my life: Trazodone (Desyrel) to fix my constant waking at night, melatonin to work against the delayed sleep phase syndrome, magnesium/ATP/d-ribose to ease the excruciating muscle pain, B-vitamin complex for energy, and lots and lots of electrolyte supplementation to help with the POTS/low blood pressure.
Does your heart race when you just stand up? Doctors are famous for telling you that you just need exercise. I told mine that my heart rate doubled when I stood up (a classic symptom of POTS), and he said "You're just de-conditioned." I told him, "I wasn't de-conditioned three months ago before I got sick, and I was exercising every day. Tell me how I de-conditioned from being able to do aerobics, walk around and climb things to being unable to stand up in 60 days." and he just shrugged. Asshole. I discovered much later that electrolytes solved the worst of that particular symptom.
The five things that made the biggest difference in my life: Trazodone (Desyrel) to fix my constant waking at night, melatonin to work against the delayed sleep phase syndrome, magnesium/ATP/d-ribose to ease the excruciating muscle pain, B-vitamin complex for energy, and lots and lots of electrolyte supplementation to help with the POTS/low blood pressure.
Does your heart race when you just stand up? Doctors are famous for telling you that you just need exercise. I told mine that my heart rate doubled when I stood up (a classic symptom of POTS), and he said "You're just de-conditioned." I told him, "I wasn't de-conditioned three months ago before I got sick, and I was exercising every day. Tell me how I de-conditioned from being able to do aerobics, walk around and climb things to being unable to stand up in 60 days." and he just shrugged. Asshole. I discovered much later that electrolytes solved the worst of that particular symptom.