When I work up this morning I had aweful pain in the middle of my back and a pain in my chest, it lasted a few seconds and cane back about a minute later and lasted a few seconds also... I haven't got them then till about an hour ago and they seem worse? And I'm getting more of them? Its just a really bad pain in my back from the middle of my back to the end and in my chest? Anyone an idea what it might be? Could it be braxton hicks?? I'm also 31+5 weeks