I'm almost 16 weeks along in my second pregnancy (first miscarried) and every time I go in for my OB appointments my doctor tells me I've lost more and more weight. I suffered from extreme vomiting up until last months visit, and I've had almost none since then but somehow lost another five pounds! I eat so much already trying to get my weight up that it feels like it would be impossible to eat anymore without throwing up from fullness. Anybody else have this problem? Should I be this worried?