I’m 25 weeks pregnant and last week, one night I suddenly started feeling very short of breath, like I couldn’t take a deep breath. I hadn’t been doing anything, just sitting on the couch watching tv. And now I’m noticing it more frequently and it seems to last a lot longer and feel harder to breathe than before, and my chest also feels tight and heavy. I’ve had no other symptoms along with it. It happens when I’m laying down or sitting up, changing positions doesn’t help at all, and it seems to last a pretty long time before it goes away. Today it’s happened several times. I know as baby gets bigger they can push up on your lungs and make it more difficult to breathe but I’m not sure if it’s that or something to be concerned about. Has anyone else experienced this? What should I do?