nausea and vomiting please help!!

I'm having really bad nausea it lasts ALL DAY. And I'm only on my 6th week of pregnancy is that normal? Everything I eat I'm throwing up. And after I throw up I feel like there's still more that I need to throw up and I start feeling nauseous again. I don't even want to eat bc I know I'm gonna throw it all up. I feel sick all day to the point it's stressing me out, I don't even wanna leave my house. I've tried taking some ginger products but nothing's helped and I haven't been to the doctor yet. Can anyone please help !?