6w 2d and feeling shaky??

Cheryl • Live, Laugh, Love 👨‍👩‍👧‍👧 #3 due 8/28/2019 🤰

Hello! I'm 6 weeks 2 days pregnant and dont have my first OB appointment until the 23rd. But for the last few days I've been getting shaky by mid morning. I eat breakfast at about 6:30am and by 11am I feel shaky and nauseous. I've been drinking 6-8 glasses of water. What could be causing this and what can I do to help it?