As you move into the second trimester, baby shifts into the growth and maturation stage. After weeks in the critical development stage, almost all of baby's systems are fully formed.
Also in my email today from the bump - Is the dizziness hitting? Want natural headache relief? - it's quite ridiculous how predictable this pregnancy is...well, I've been having brain splitting headaches for 2 weeks now, and the dizziness is the worst (mostly only when going from sitting/laying down to standing). I'm actually going to call the clinic today about my headaches. I pretty much have them 12 hours out of every day. It's really starting to suck.