oh my, I am in the same boat. I had sex on thanksgiving 2008 with an old fling and then my old bf on dec 16, 21, and 26....my last period was dec 6 2008, so my dr. said it was my old bf witha due date of sept 12th, but at my 20 wk u/s the baby measured at sept 8 and my dr said no big deal and at my 25 wk belly check, I was measuring right on 25 wk...
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