My last month period is on 19 October yesterday I had a scan of 28 weeks 6 days but my baby growth come bcp 28 weeks 5 days hc 27 weeks 5 days ac 27 weeks 4 days fl 27 weeks 2 days. Is my child growth is normal

That due date was just a guess that could be two weeks earl or two weeks later.

Its not an exact date... so 1 week off is well within what can be expected.