Confused

[whoopsfallenoveragain]

I had a scan on Friday that showed an empty pregnancy sac.
I've just phoned the epu to see if I can get something done as I'm pretty sure of my dates but they have said the earliest they see me is next tuesday (so they'd be able to tell if there was any change).
I asked what the sac was measuring and the told me 19.5mm.
They told me it would have to be over 30mm for them to know it had definately not developed.
Does anyone know how many weeks it would measure 19.5mm and how many 30mm?

Not ignoring you I just dont know but want to keep this bumped.

Table 1.2 Measurements of gestation age by ultrasound

Mean gestational
age (wk)+ Mean gestational
sac diameter (mm)? Embryo CR
length (mm) BPD
(mm) Femur length
(mm)
5 + 0 2 ? ? ?
6 + 0 10 6 ? ?
7 + 0 18 10 ? ?
8 + 0 26 17 ? ?
9 + 0 ? 25 ? ?
10 + 0 ? 33 ? ?
11 + 0 ? 43 ? 6
12 + 0 ? 55 17 9
13 + 0 ? 68 20 12
14 + 0 ? 85 25 15

• From 1st day of last menstrual period ? Daya et al., 1991 ? Jeanty, 1983 Adaped from Wilson RD: Prenatal evaluation of growth by ultrasound, Growth Genetics & Hormones, v.9(1), 1993.

that didnlt work very well

basically, a 7 week sac measures around 18 mm

a 10 weeks embryo is around 33 mm crown to rump

Whoops - I found some stats on this and will look them up for you and send you a link. As you know, my situation is similar. I was measuring 11.4mm last week and 18mm this week. I do recall though that they should grow at the rate of 1mm/day if all is well and less than .7mm can mean something is not right.

link to the stats i found

Sorry should add that I was told 11.4 was 5+5/6 but was then told on Friday that 18 was also 6?! very confusing. I'm meant to be 9+1 based on OV, 9+4 based on LMP.

Thanks
I'm glad I don't have to wait the full 2 weeks now as I realy don't have any hope that things are going to be ok.

How are you today MrsMcJnr?

hugs for you both x

Whoops here's the link