Already dialating at 35 weeks

So I came to the hospital to check myself because I had a very minor leak I wanted to make sure everything was okay or that my water wasn’t leaking. The nurse also checked if I was dialating she said I was already 2cm and can definitely feel the head this is my second pregnancy. So what does that mean that I can be in labor any day now? Since I’m already 2 dialated? 😳