Im 38 weeks, i had an ob apointment today, my doctor checked me and im 1cm. When i got back home i was having some light…

Im 38 weeks, i had an ob apointment today, my doctor checked me and im 1cm. When i got back home i was having some light bleeding more brownish colored. I called my ob and had to leave a message i tried over and over to get somebody on call and ask but nothing. So i left a message and they still havent called back. Im not having any pain just lots of pressure and a little nauseous. And there is still a tiny tiny little bit of blood but its darker... Is this normal? Obviously if it gets worse i will go to the hospital but i just wanna make sure i shouldnt go now..?