weird day

I have felt so strange all day today.  Ever have the feeling that something is wrong but unable to say what it is?  I have no idea why. I know I did not sleep well last night. I went to bed early..so tired..but tossed and turned and ended up sleeping in til 7:30.  I felt like the day was already behind so I got moving pretty quickly on my homework.  By noon I was completely frustrated.  These dumb assignments that have to be in a youtube video are very time consuming.  I finally finished around 3.  another whole day spent without actually working on the textbook part of my class.  
I have had a terrible sinus headache all day.  Yesterday was extremely windy so I am sure that had a lot to do with it.  
We have been having trouble with our at&t service and they sent us a new dvr.  I have been trying to catch up on some of my shows so I can change it over.  I sat around watching tv most of the afternoon after finishing my project.  My boyfriend made chicken enchiladas..we ate around 7:30 and then cleaned up.  He spent most of the day building me a box to put my PI project in so we can hang the camera near the bird feeders.  
Now that we have eaten I feel better than I have all day but now I still wonder...why am I such a fruit loop.  What is that feeling that something is wrong and where does it come from?  Chemical imbalance?  most likely.  At least I have not had an anxiety attack(YET ha ha).
I just get so tired of being me some days.  The irrational moods and feelings of depression..what the hell is my problem anyway?  Nothing is wrong...nothing that should leave me feeling so low anyway.  Just rambling stupid thoughts...another exciting Saturday night at my house lol.