Hey mama! Based sa Sept 9 as your first day ng last period, ang EDD mo should be around late June to early July, kaya ang July 19 or 21 sounds a bit off, usually the dating ay tatlong buwan forward plus a week or so. Better to ask your OB ulit to confirm kasi baka may counting discrepancy or dating ultrasound na nagbigay ng adjusted EDD, a few of us had different dates when we had our first ultrasound, kaya importante talaga na clarify with your doctor para sure!