Lucy, try not to stress over the midwife. Just do what you can to eat healthy. They can't force you onto a meal plan, afterall. I got a mouthful when I'd gained 35 lbs by 24 weeks, but ah, well, I will not be forced to eat certain things. I eat healthfully, if I gain, I gain.
Sarah, I have a very faint linea nigra going as well. I didn't think I'd get it because I'm so pale, but a week or two ago I noticed it finally. It's so light, though. Wonder why this develops, so weird.
Phineas, what kind of spots are you talking about?