A few years ago I started falling apart. I was depressed. I was tired all the time. My muscles burned with exercise. My stamina was low. My motivation was low. I was worrying all the time. I was also developing a host of other symptoms like poor sleep, headaches, digestive problems, muscle aches, and brain fog. I was only 40 but feeling 80!
I went to couple of doctors and they just told me I was depressed and wanted to prescribe me Zoloft or some other antidepressant. But I didn't want to take them, so I kept researching to find out what the heck was going on.
It turned out I had low thyroid. However, it was mild, "subclinical" by most doctor's standards, so getting diagnosed and treated was difficult. Although my TSH (the typical thyroid test) was normal by most lab ranges I was at the high end of normal. Many doctors and even the AACE (American Association of Clinical Endocrinologists) do not agree with the range most labs use to define "normal" thyroid function. I found a doctor who agreed most lab ranges are too wide and prescribed me thyroid meds. I'm happy to say that after several months on thyroid meds I'm feeling normal again! My energy has returned, the aches, pains, and headaches are gone as are nearly all the symptoms I had!
Please do some online research about the similarities between Fibromyalgia, CFS, depression, and hypothyroidism! Get your thyroid function tested! And when you do get it checked, don't just blindly accept "normal" as an answer from your doctor or lab. Ask them what the actual number was and what their range is. Get a copy of the lab results if you can. The AACE and many doctors consider a TSH of 2.5 or higher as suspect, especially if there are symptoms, but many labs consider a TSH as high as 6 to be normal. Don't settle for that! Mine was "only" 4.5 and I was half dead! Thyroid meds have changed my life and I feel good again! Doctors, unfortunately, often don't care about making you feel good. They just care about keeping you within "normal" lab ranges and, as long as you're not dead yet, that's good enough for them. Don't settle for just staying alive. Find a doctor who wants you to feel GOOD again! They are out there. They're just hard to find so you might have to kiss a lot of frog doctors to find your prince.