I got SPD really bad with this last pg, it is the only reason I'm not going back to have a fourth for at least a few years if at all. My physio and dr both told me that having subsequent pgs so close together is what made is worse ( body not having a proper chance of recovery from all the hormones).

There is no family history of SPD at all on my mum's side. But then again they don't get stretchmarks either and I am covered in them. Not sure about dads side, we don't have contact with them, but I would be curious to know.