It's stands for subchorionic hematoma. I had some spotting a few weeks ago that came back a week later. Both with cramping and back pain. Dr ordered u/s and it came back that I had two small spots. Told to take it easy and on pelvic rest. So on vacation this week i did some light hiking (<3 miles) and then today did some work around the house. I ended up having spotting again with extreme cramping. One time. Getting off the couch it was such a sharp pain that it took my breath away. Anyone else have this? I have dr appt tomorrow but wondering if anyone else is going through this too!