Hi,
I had a DIEP in '07, I think what you have is scar tissue and you need to massage it to soften it. It hurts to massage it but it won't hurt it. The pain if from breaking up the scar tissue. I had great success with my DIEP also and would do it again if I had too. I had radition which canceled me out for implants. Best of luck to you and I'm sure you will love your reconstruction.
Teresa