What Causes Pain In Cervix And Abdominal Tightness During Pregnancy?

Hi! I am 37 weeks pregnant and I been having pain in in my cervix area and vagina especially when i stand and walk or if I lay down and little bit of pain and tightin in the abdomen mid and lower section and i have 1 yr old I had to have csection with because my cervix wouldnt open. So I got pregnant before my csection area healed and my daughter at the time was 4 months so now I gotta have a csection because its risky to try normal deliver. I m just trying to figure what are these symptoms I m having I m I in labor or