Is this normal?

Marie
I became suspicious I was pregnant when I started having trouble keeping food down. I was only 8dpo when I tested and got a faint line. I've gotten 2 more pregnant results since then....anyway. I have trouble keeping food down all day!!! Sometimes even water makes me nauseous and is a battle to keep down. I'm currently 4 weeks and have had this going on for a week. With my first child 9 yrs ago I was never sick once! Is it normal to be "sick" all day?!