I was making my bed like normal, don't recall doing anything strenuous, but during I got a sharp pain in my chest that felt like gas. It quickly subsided in my chest and moved to my upper back. It hurts when I move and doesn't let up much at all when I lay down. I took a hot shower, went number 2, etc nothing is easing it. Has anyone else experienced this? it's a hard to describe pain, but doesn't feel much like I pulled a muscle. more like trapped air. I'm also short of breath but that's nothing unusual some days.. I'm 28 weeks.