Nauseous and Unfocused

Eva
I recently found out I am pregnant, as in 2 days ago, but I did my math and I think I'm 7 or 8 weeks. 
I don't have morning sickness and can have breakfast just fine. At about 12 I get super nauseous when I'm supposed to eat lunch (so uncomfortable when talking to my boss who doesn't know yet) and then nauseous when I have 2 bites of my meal. It subsided after 20 minutes or so. What is that all about?! 
Also, I feel SO unproductive, unmotivated and unfocused. I usually am extremely motivated the week before a big work event (tomorrow)...but that is not so today.   :(