some input please. Tia

Hey , I'm currently 39 weeks 6 days pregnant, tomorrow is my edd. I know this is gross but should I be worried. I have my 40 weeks appt tomorrow and I will be asking then. I have not once since this pregnancy had any type of bloody show or weird discharge until now. I've been having a lot of pressure and some backache and constant bh contractions but nothing crazy or consistent. some input would be greatly appreciated Tia.