Sorry to hear you had a bad experience. I have never actually thought about this and it's a good question you raise..... I had laser treatment about 12mths before falling pregnant. In labour my OB checked my progress when we arrived at hospital. I was 4cm dilated and as he was doing the internal he asked me if I had had cervical treament as he could feel the scar (he obviously didn't have my medical history in front of him at that moment in time). He then did a 'stretch' to move the cervix past the scarring (hurt like hell) and my baby was born naturally 2 hours after this. I believe my Dr's early internal exam assisted the quick progress of my labour and successful delivery. I am very thankful to my OB for intervening when he did as I had no idea it could interfere with labour - but it makes sense that it could.