I recently was pregnant and started getting odd cramping sensations that I had never felt before, it ended up being
appendicitis, I miscarried I think due to
appendicitis, and just had an emergency appendectomy. I'd say follow your gut (no pun intended) For me the "sensations" did not feel "right". When in doubt go to the ER. If I would have, it's possible I could have saved my pregnancy-also possible that it was doomed from the beginning.