Yep - Bub was measuring 8 days ahead when we had our 20wk scan. I know my dates are spot on as I was on Clomid and charting my temp. My Ob even based his dates on my chart rather than LMP. My fundal height has been around 2cm ahead too but OB is happy as he said it means Bub is obviously well nourished. He prefers Bub's to be a little bigger than anything else. I think I am just going to have a big Bub as I was a big Bub myself (10lb 3oz).