I went to my GP because I haven't had a period for four months. I had some blood tests done, and one was repeated after a week, as my luteinising hormone level was raised both times. I'm 41 so assume its the start of the menopause. But she said she has referred me to make sure it's not anything to do with my pituitary gland. Does anyone know what else it could be, I'm a bit worried. I'm not googling it as I will only end up more worried.