Hi Diana. I had something quite similar to this when I was preg with dd, and was CONVINCED without a doubt that it was my cervix opening. Anyway, I lived with it for a couple of days before taking myself off to the ob. Turned out I had a rather nasty thrush infection (which I knew about), but had no idea it could cause pain or discomfort other than the usual itching. My gp had dismissed my concerns, while the OB was great. He pretty much said that GPs have no idea about these things because they dont see it often enough. Anyway....took two courses of Canestan pessaries, and totally fixed the problem. All that stress for nothing.