Hi, I had a very long labour with dc1, long story but basically wasn't listened to, she was back to back and ended up in theatre with forceps, where it turned out she was completely stuck and ended with shoulder dystocia. Dc was fine but it was incredibly distressing. Nobody ever talked about the birth with me and still feel quite upset by it all sometimes. Nothing was discussed about my past birth when I was pregnant with dc2, had a very quick labour, but birth also ended up in shoulder dystocia - dc was fine again but had all the alarms going off and people rushing in, big tear and lots of blood and DH was really traumatised by it all, although I don't remember too much as it all happened so quickly.
It wasn't until I was pregnant with dc3 that they said I needed to see a consultant this time due to two shoulder dystocias which is considered rare, especially as I am not in any of the risk factors, I have a BMI of 23/24, no diabetes, wasn't induced, and my dc were only 6lb14 and 7lb15. The consultant I saw with dc3 was very blasé about it all and said he would just try for a vaginal birth again, which I wasn't very happy about at all but felt a bit bullied into attempting it.
We emigrated to NZ when I was 27 weeks pregnant and saw a consultant here again who was absolutely shocked that a hospital would even consider advising me to birth naturally after two shoulder dystocia and said that she highly recommended a elcs as there was a very high risk of it happening again - she actually said that there weren't any studies that she knew of about the chances of it happening 3 times as often after just 1 people would opt for a elcs.
When I had my elcs (at 39 weeks) they struggled to get dc3 out as he was so wedged into my pelvis and I was really bruised after. I was told after that if I had tried to give birth naturally he would not have been able to descend into my pelvis and we would have ended up with a emcs and it is likely he would have suffered injury - terrifying to think about. He was 8lb3oz. They think it's likely my pelvis just isn't big enough.
I don't want to scare you as the chances of it happening twice are rare and I know people and have heard several stories of people having a shoulder dystocia and then one or more natural births without any issues at all. Just felt needed to share my experiences, I am pregnant with dc4 now and it is on my mind, I had a really easy second birth apart from the end bit and I really would have loved another natural birth, but I don't think my body was made to give birth naturally :(
Good luck with your pregnancy, hope all goes really well for you whatever you decide :)