Hi pajamaqueen,
I recently had the sleep studies done and can tell you I absolutely felt the same way you do. I was very put off by the idea of someone watching me sleep other than my husband. In truth, I was making up excuses not to go. I had to go 2 different times because I didn't sleep enough the first night to get both a diagnosis and a fix. However, out of 8 hours I did sleep over 3 and 2 of those were deep rem sleep during which time they found I have severe obstructive apnea. The second time I didn't sleep much more because the CPAP mask bothered me a great deal. And you are correct, I was a totally fatigued train wreck for a week or more after each study. I also caught the flu which turned into sinusitis that lasted for 2 months. I blame it all on being sleep deprived.
However, the truth is that I was sleep deprived all along and that is what was contributing to my fatigue. I also have Hashimoto's Thyroiditis, hypo T, and a form of Lupus both of which cause fatigue.
I have been using the CPAP mask for 6 weeks now and I can't feel a difference unless I don't use it. I have tried 2 nights without and oh my, the fatigue was extreme again. So while I hadn't really noticed much improvement, there obviously was some that was quickly evidenced when I didn't use the mask.
I guess I am trying to tell you to swallow your pride and your modesty and have the sleep studies done. In the end I think you will be glad you did no matter what they find. If there is a problem it can be treated and if there isn't one you will have ruled this possibility out.
May God Bless and Keep Us All
Patience 50