Hello! Girls, could you please tell me? ? I have lower abdominal pain …

Hello! Girls, could you please tell me? ? I have lower abdominal pain like during my period, it's still a week before my period, I already took a test and saw one line ?, what could this be? ? I had such stomach pain during my third pregnancy but at that time there was a delay, and now it's still a week before my period!!!!