4cm but thick cervix

AnnieQ • 💙 J, 10 👦🏼 ...💕D, 9👧🏼...💙G, 1 👶🏼...💕P, 2018 👶🏼
I'll be 38 weeks tomorrow. I had an appt Tuesday that had to be rescheduled to today, then that was rescheduled from this morning to this afternoon-- but after talking to the nurse about the possible signs of labor I've had since Sunday, she told me to just go into the hospital to get checked, just in case.
The on-call doc checked me, baby is at 0 station, I'm 4 cm dilated, but cervix is still on the thick side. 
What to do to help thin it out and bring this labor on?! We are ready!