I've been feeling the same and I'm only 4 weeks 2 days. I have been feeling a little sick too so I haven't been eating as much as I should be. But it's mostly if I stand up too fast.
Started Dating DH 09/03/2009 Married 07/01/2011
Surprise BFP 10/18/2008 EDD 06/19/2009 DS #1 Born 06/16/2009
My midwife just had this conversation with me because I am often a bit dizzy. Eat eat and eat, and drink drink drink. Your blood sugars are going to be EVERYWHERE for a while. She also suggested that I make Greek yogurt or cottage cheese a before bed snack to help with the morning nausea and it has worked wonders.
Re: Dizzy/light headed?