7 weeks and symptoms are fading??

I had breast tenderness immediately, to the point when I would get up to pee in the middle of the night I had to hold them as I walked so they wouldn't giggle. My co-worker heated up some steak and it sent me into a dry heave spiral...random foods would make me gag weeks 1-6 (I found out early)Then yesterday (about 7wks) out of the blue I woke up feeling pretty good and my breast dont hurt. Other than feeling a little tired I feel "normal". Instead of feeling good about this I'm worried, worried I've lost the baby. Has anyone else's symtoms stopped? I finally get my ultrasound on tuesday and I'm so nervous they wont see anything there. I lost my last around 6 weeks but the loss was obvious, violent and painful. I'm worried now about a "missed miscarriage" until recently I didn't even know there was such a thing. I'm terrified.