It's an interesting question and I've never heard that suggestion before.
I was born at 34 weeks back in the 1960's and barely made it and don't have any symptoms of BPD. My son with BPD tried to be born at 28 weeks and I was put on bed rest and given all kinds of drugs to stop the labor. he was eventually born at 38 weeks and has a form of cerebral palsy.
So who knows?

36 weeks is pretty good.
There are a million reasons why people develop personality disorders and we don't yet have the science to back any of these theories up. I wouldn't beat yourself up about it.
