I am so thankful for your expertise. I had a somewhat confusing scan today, and research on the Internet has not really helped that much. From the beginning of my pregnancy, they were fairly sure that my twins were di/di fraternal. Not only were my ovaries quite stimulated on fertility drugs, but during previous scans the ultrasound tech commented on the thickness of the membrane separating the babies, and gave her opinion that they were almost certainly fraternal. At my 12 week scan, she told me both my placentas were anterior so I know she saw them at that time. There was no mention of the possibility of a single placenta
I had another ultrasound today at 16 weeks. As the scan progressed the tech started getting more and more convinced that the twins are probably identical. She pointed out that the top of the membrane had more of a T-shape than a V shape. Also, she and the doctor took a look at the placenta and now they're saying they cannot tell if it's two placentas that are butting up against each other or if the babies share a placenta.
The plan is for me to go to MFM for my anatomy scan at 21 weeks. The doctor is curious what they think about the twin type/placental issue as well.
After my Internet research, it seems like the separation (lack thereof) of the placentas should've been determined between 11 to 14 weeks. I can't really tell, but it seems like this is more difficult to tell during the second trimester?
I may call my doctors office tomorrow to ask what the 12 week scan showed in terms of a single or double placenta. Of course I'm also a little bit worried if they share a placenta. It seems like I should be monitored about every two weeks instead of every four weeks if that's the case? I'm wondering if I should ask to go to the MFM sooner for second opinion.
The good news is the twins are basically the same size and the tech sees no sign of TTS.
Opinions? Advice? Any similar experiences? TIA!
Edited to try to fix mobile formatting issues