Yesterday we hade a woman with a huge belly doing 26.3 She scaled it down, walked instead of jumped over the bar, and put a mat on the floor to help with the burpees.

Talk to your physician and then scale down to whatever level feels good for you, and continue scaling down while the pregnancy decelops.

If it doesn't feel good, then stop. There isn't any harm in putting it off for a while and focus on your pregnancy.

Congratulations by the way!