Baby is getting cozy in there,ma :) Taking up lots of room and space now.
Try laying on your left side for awhile till you catch your breath. Next time you go to doc, I would ask for some other ways to relieve the discomfort.
Hang in there :)
i had the same problem not to long ago does it feel like some one is sittin on your chest and is worse when layin down thats how i felt and went in to the er room and found out i was havin a galbladder attack