I'm started out my pregnancy at 180 pounds. I was super active doing daily spin classes and walking. During my first trimester I was very sick and put on bedrest due to miscarriage watch. The only thing that made me feel better was to eat carbs. I ended up gaining about 8 pounds. I'm now at 20 weeks and up a total of 18 pounds, five of which happened in the last week. I'm walking now, tracking my calories, and eating pretty healthy. I'm concerned with the big weight gain in the last week. Do other women have similar experiences?