Not to worry. There's lots of pressure going on. If you look back at some of the other pictures, you can see she's had several strong veins showing slight bulges as this baby grows and moves around.
She should be just fine, but just watch to see if it causes her any serious discomfort. A bit of exercise is certainly good for her. Make sure she has lots of free time to wander around outside. You can even place hay in different spots around her area to make her walk from place to place during the day. And a nice quiet walk with you after work, will ensure she's getting some sensible exercise during these final stages.
She's looking very good!!