My doctor said an additional 300 calories in 3rd trimester. I wouldn't eat an extra 1000 everyday. Just eat like normal and your baby will be fine.
I mean, basically don't worry about eating a certain number of calories, worry about eating foods that are nutritious for you and baby and eat regularly. :-)
I wouldn't worry about it. If your baby is healthy and you're eating normally, theres no need to stress. This is Mt second baby and I'm 33 weeks today but I've never counted calories. I just eat when I'm hungry. Just don't skip meals and you'll be fine.
I haven't heard those numbers before. The most important thing is nutrition more than counting calories. you should be getting lots of protein and green veggies for ask the nutrients they provide. If you're doing that and eating three decent meals a day with a healthy snack between you should be doing great.