I'm terminating a pregnancy at 20 weeks due to medical reasons? I've b…

I'm terminating a pregnancy at 20 weeks due to medical reasons? I've been in gynecology for 4 days now. They induced labor with pills. For a whole day I was walking with contractions, and they were strong. But the miscarriage didn't happen. Turns out my cervix wasn't opened ? I am exhausted physically and emotionally. I couldn't sleep all night, there was no strength left. I also had a hard cervix with my first child and we did a CS. Doctors are refusing to do a CS. What can help open the cervix?? They said we have to start over again. My heart can't take it if it doesn't work again.