How come i have severe mood swings during and before my period and it lasts 7 days with bad cramps the whole time. why is mine so much more severe?

Bad PMS: Dear bellad: there is a wide range of severity of pms (technically referred to in psychiatry as "premenstrual dysphoric disorder" symptoms. While a real pain, yours are within the "normal range" that have been reported. In terms of the severe cramping, i would advise seeing your ob-gyn. Use of ssri's and/or also the nutritional supplement 5htp may be helpful pre-menstrually. Good luck!