How do I stop this morning (all day) sickness

So I was definitely really sick with my first and I threw up once a day my whole pregnancy. But for some reason it wasn’t a constant nausea. I would throw up and then feel better. Now itsfrom the second I wake up to even when Insleeping I wake up in middle of night sick feeling . It literally feels like a constant stomach flu like I’m going to throw up but I don’t. Just nauseous 24/7 no matter what I eat. They prescribed me zofran my last pregnancy but I barely used it. Idk if I should call my ob or call my normal dr and talk to them about it ? What do I do. It’s so hard to function and take care of my 11 motnh old. Btw I’m only 6-7 weeks and it’s been going on 2 weeks