Re: Measuring behind... could the baby still be okay?
Do you have a retroverted uterus, by any chance? Lots of things can interfere with visualizing and measuring the sac and fetal pole this early, but I know that's a big one.
E, full-time WAHM & married to J since 2000, with
Ladybug, 10 Koala Girl, 7
and the C Monster, 4