If you have severe or unusual menstrual cramps, or cramping that lasts for more than 2 or 3 days, tell your doctor. Menstrual cramps, whatever the cause, can be treated, so it's important to get checked.
Your doctor will ask you about your symptoms and menstrual cycles. You’ll get a pelvic exam, in which your doctor will use a tool called a speculum to see into your vagina and cervix. She may take a small sample of vaginal fluid for testing, and use her fingers to check your uterus and ovaries for anything that doesn’t feel normal.
If it turns out that your cramps aren’t due to your period, you might need other tests to find the right treatment.