to put on weight on 2,000 calories a day of any sort of foods. If you're a 4'11" size 8, it might just be enough to maintain your weight. Any taller and it won't be enough. As for exercising less or more... you're already doing a substantial mileage
having a wonderful time when running through- out their first trimester. Be sure to map out toilet stops along your route, wear a supportive bra and stop running if you feel too tired at this stage. Weeks 0-14 are crucial as far as your baby