is my nausea fake๐Ÿ™„๐Ÿ’€

Leah โ€ข 20. baby due 8/13๐Ÿ’•
I'm 6 weeks and I've been experiencing occasional nausea the only thing about it is one minute I can only stomach liquids and ice then the next I'm ready to go in on fast food. I'm usually a very healthy eater and kale was a big part of my diet. Now I can't eat it! And thinking about it makes me sick along with many other things me. Is my diet telling me something? Why am I only craving salty fast greasy foods idk maybe I'm over thinking it ??