7 weeks 2 days and symptoms are fading

I toss and turn during the night and I have some food aversions, breasts aren't as sore but still sore in the mornings mostly.... Symptoms are fading and I just don't feel pregnant! Is this normal?! We have an 8 week ultrasound next Thursday. Just hoping and praying there is a baby in there that is growing! I am just so worried :/