I'm 14 weeks and I 've lost over 10 pounds. Everyone has told me that it's normal.

me too , I'm almost 6 months & have not gained a pound just lost 1

Don't worry too much. I felt the same way, I had horrible nausea and vomiting throughout my WHOLE pregnancy. I only gained 7 pounds total and just the last month, I kept losing and then gaining them back then losing then gaining then at like 7 months, the scale just didn't move. But the ultrasounds showed he was actually 2 weeks ahead. He ended up weighing 8lbs 12oz at birth, so try not to worry I'm sure your baby is fine! :)