Oh my gosh, that seems extreme (termination!)
Did this dr do your last c/s?
With my 5th, my dr told me that I had little to no scar tissue and she was really astonished with how great everything looked in there. That's when she said we were good for another. So, I dont know if a lot of scar tissue would of changed her mind...
It was quite surprising when, at my 20 week scan, she was so freaked out (ultrasound showed extreme thinning at 20 weeks and she didnt think we would make it much farther).
So, it turns out she was right about the exact measurement but that really didn't give her enough information....I say this because, no one can really predict what's going to happen...but I'd be sure to have a doctor that supported your decision.
If you do have another, be prepared for some sort of bed rest as the baby gets bigger, and an early delivery (sounds like you know about that!)