Ouch holy shit!

This back pain is intense. It's not going away and has lasted since 2pm today! I was at the hospital because I thought my water broke but I guess she just say on my bladder lol. They checked me and said I'm 1cm dialated, and I'm contracting! This is my first pregnancy and I'm 36+3. How long were you guys at 1cm? And were you in pain? I'm in a lot of pain in my back I feel super uncomfortable. I see my actual doctor tomorrow for the group b strep test and for him to check me for dilation. Is it supposed to hurt and be this uncomfortable when you're only 1cm ?