Is there a reason why i am having menstrual cramps a week and a half before my scheduled period?

This sounds like PMS: If you have premenstrual syndrome (pms), the sxs usually occur in the 1 to 2 weeks prior to menstruation. Pms sxs can include feeling tearful, irritability, mood swings, anger, depressed mood, change in sex drive & anxiety. These may be accompanied by swelling of the breasts (or extremities), weight gain, abdominal bloating, cramps, nausea, ^ urinary frequency, overeating, headaches (to include.