Is it all in my head?

Ok so I went to Barnes & Noble today to find a good book and of course I found myself in the baby section lol. I bought a book that was recommended to me by one of my best friends Alicia. It talks about what to do when trying to conceive and what to expect each week. It's called Pregnancy Week by Week by Glade Curtis. It's full of interesting information like how to make babies!!! Step one. <---- That last sentence was typed by Will lol. He's so silly. Anyway I was looking at this other book that had amazing pictures of the embryo under a microscope fertilized and so on. I read some of the symptoms and one of them was sore and tender breasts.....when I read that a chill went down my spine! I have had sore breasts since Tuesday! Not normal for me unless I'm on my period. I'm irritable, a little tired, and my urinating is a little more frequent. So I wonder if this is real or if its all in my head. My sore breasts are definitely real. My irritable attitude may have something to do with the fact that Will is #2 on a list of possible people to deploy to Iraq for 14 months. Fatigue may be due to getting up early all week for clinicals. Frequent urination may be due to the fact that I increased my water intake a little. Or it could be symptoms of pregnancy. *sighes* This is so frustrating. I have to wait until Wednesday to take an early pregnancy test. What do you think??