No family history here either, I had it baaaaad with my second pg, no signs at all during my first.

I was actually pretty fit - had been bellydancing for ages prior to my 2nd pg and I often wonder if it was the increased mobility in my pelvis from all that dancing that did it. Ssssssh you didn't hear it from me...

I think it's one of those things - people expect that a heavily pregnant woman will have some (minor) pain/discomfort - women at that stage of their pregnancies tend to complain loudly and soak up the attention - unfortunately this means that those who have an unusually high level of pain get ignored/overlooked even often by their caregivers.

Here's my advice: whatever you do, don't push through the pain!!!