I get a sharp pain in my abdomen a day before my period, what could be the problem?

Premenstrual: Cramping is one possibility. 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 migraines), dizziness, fainting ; palpitations. Sleep may be disturbed.