Extreme nausea & Losing weight in first trimester

I'm 7 weeks and I have been miserable! I throw up all hours of the day. The nausea is constant. I've actually lost weight according to the scale. But my pants are tight and my belly definitely feels bigger. I think it's just bc I'm so bloated since I'm having so much tummy troubles. I go back to the dr In a few days. He's prob gonna freak bc I've lost 5 lbs in 2 weeks! Anyone else dealing with this?