Starving but nauseous?

Anyone else nauseous all day long but feel the need to eat too? I'm hungry all the time but also feel sick all the time! I have an appetite but as soon as I eat I go right back to feeling sick. Drinking water is the only thing that helps me feel a little better so I'm constantly chugging water. This is the most confusing feeling because you'd think I wouldn't want to eat feeling nauseous and queasy all day but I'm ravenous!

I'm 7 weeks today and it has hit me hard the last few days. I usually start to feel slightly better in the evenings, which is the opposite of what I had with my daughter.