Thanks for letting me know I'm not alone murraysmum. It is such a disturbing feeling. They were talking about possibly treating it with beta-blocker medication - but I'm really not keen because of possible effects on bub. I think I'd rather learn to live with it (as long as it isn't life-threatening)... Has yours just started in pregnancy too? I read somewhere that high levels of progesterone are thought to play a part... I hope you are well