Using Omega 6 in last few wks of pg ??

Has anyone used starflower or evening primrose oil in last few wks of pg ? I've just read that it helps release prostoglandins which can help relax the cervix and wanted to know if anyone has tried this ? I am already taking rasberry leaf, doing reflexology and doing the perineal massage - anything to help with a natural child birth but these methods are tried and trusted and well read and written about the Omega 6 is news to me !

Just bumping this one to see if anyone has opinion advice ?????????????