Good evening. For the last day and a half I've been having quite severe lower abdominal cramps (similar to severe period pains) that come and go in severity. Alongside this, chills to the point of teeth chattering (but no temperature). Feelings of fatigue (though I managed to get to work today). However this morning when I got up, for an hour or so I kept blacking out, but managed to control it and it eventually passed (I am prone to dips in blood pressure). I am a working mother (I teach) and it has been a particulrly busy period, plus stressful time with two teenage boys. I'm 50 with some premenopausal symptons. Now in bed and the shivers have gone, but still dull lower abdominal pain. Can you advise? Mary thanks.