Girls, can you help me? At the end of my 33rd week of pregnancy, my be…

Girls, can you help me? At the end of my 33rd week of pregnancy, my belly started pulling and along with it I began running to the bathroom (sorry for the details). As soon as my belly starts pulling, I immediately go to the bathroom. The discharge is colorless, only on underwear at the end of the day. Otherwise, there's nothing else: I wanted to know if this isn't a sign of imminent labor?