Ask the Ultrasound/Dreams Expert

Ultrasound and Conception Dates

Jane Foley's picture

QUESTION

Dear Ms. Ultrasound,
I have had two scans so far both match up with my lmp. I had one at 7 weeks and one at 13 weeks.
so I calculated that I conceived around 22nd September.

Here are my dates:
lmp: 9/10th Sept
28 Oct: 7 week scan
Conception around 22nd September?

However my period was very light and spotting, is it possible this was actually implantation and the ultrasound is out by few weeks?

Abnormal 9 week Ultrasound

Jane Foley's picture

QUESTION

Dear Ms. Ultrasound,
We just had our first ultrasound yesterday after hearing our baby's heartbeat earlier in the week. The ultrasound tech noticed what she called a rather large "fluid pocket" near the lower spine (see the attached picture). Neither the doctor nor her had ever seen anything like it, but they told us not to worry (that these sometimes come and go spontaneously) and to come back in two weeks.

Large Yolk Sac, Low Heart Rate?

Jane Foley's picture

QUESTION

Dear Ms. Ultrasound,
I had my first ultrasound yesterday (Jan 7) and I just came from the doctor's office. My last period was Nov 10, which would make me LMP 8w2d, but I know I ovulated late (Nov 28) because I was artificially inseminated on Nov 28/29.

The ultrasound showed my yolk sac was 6mm, which is apparently larger than the normal range by 0.2mm and the heart rate was 109bpm which is just a little low of the normal heart rate. She said these numbers wouldn't matter if I was over 8 weeks, but the ultrasound dated me at just over 6weeks?

Possible Twins At 16wks? Is It Possible?

Jane Foley's picture

QUESTION

Dear Ms. Ultrasound,
I'm 16 weeks pregnant. I have had a few ultrasounds and they have only seen one fetus.

Last week I was told that they could see another sac and a shadow but they weren't sure if it was another fetus. Is that possible even though I've had like 4 ultrasounds before?

I also have placenta previa. Do you think maybe that's what they saw.

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