Pregnancy Symptoms disappeared?

Justine

I am 7weeks 5days right now and for the past two weeks have been so hungry every two hours and was nauseous if I didn't eat right away. That has really been the only symptom I have experienced. The past two days I have felt nothing! My appetite is normal and I am not super ravenous like I was. It makes me so nervous. Is this normal? I had my first ultrasound last week and we heard a heart beat of 126bpm. I get my next one at 10wks.