early labor

Mineo

long story short, despite knowing when we conceived we are still going with October 4th as our due date (possibly 2 weeks earlier then what we think) baby has been measuring in between. well this one will be my third csection. last time I had a 4.5 year gap this time a 2 year gap so I feel the scar tissue may be what I'm feeling?? here's my question, on Friday I got called in, not dialated but contractions consistent enough to be considered beginning early signs of labor. alot of rest water etc. now the baby has completely dropped into position and when I walk even small distances, I limp or have to stop with a serious pulling straining pain in the csection area. I'm panicking of I'm tearing, or having contractions again that unfortunately I can't feel. has anyone ever experienced this??