Sounds like you're getting all the early pregnancy symptoms at once! Man, that sounds frustrating. Personally, I noticed the boob pain and growth before anything else, then came the fatigue, then the morning sickness. By month 2 I was in the worst of it, especially with the fatigue.
Obviously symptoms come at different times and in different degrees for different women, but I can say for myself (and most of my friends) that they began to lift before the second trimester. From what I understand, week 6 to week 12 is the hardest to get through for most women, so maybe you're approaching that 6 week mark?
Hope you feel better soon, and congrats!
Sally