I'm sorry I don't know this...but have you been pregnant before? If so, are these "symptoms" the same? Both my pregnancies were TOTALLY different, well, the only similar thing was my extreme sickness the entire time (i've never vomitted so much in my entire life...lol)....but I've heard other women say they've had the same "symptoms" each pregnancy.
I know you don't want to find out the results of a test...but that's the only way to clear your mind about this. Go get one...today. And then deal with the other issues.
Oh, and stress. Stress does weird, awful things to your body and mind...that "could" be another thing causing these symptoms.