6 week ultrasound possible multiples sonographer help would be awesome

Ok first quick background info. I went yesterday to a regular sonographer who I don't think had a lot of experience with pregnancy ultrasound. I expected to be roughly 6+0 weeks. He did transvaginal, he found a heart (112 bpm) and did a quick crl and got 2.5 mm, quite small for what I'd expect at 6 weeks. In the scan I had a brief moment where I thought I saw a second sac but figured twins don't run in the family, didn't use fertility meds etc, so didn't think much more of it.
Fast forward to today, I had a scan with my obstetrician and immediately we saw two sacs, or what looked like it. He said he also saw a possible third sac down the bottom. He was quick to dismiss any viability of the two sacs, and focused on the third which gave a crl of 6.8mm. He didn't measure heart but said it looked good.
My question. Is it possible the sonographer scanned the other sac yesterday?? Or is it possible for the same fetus to be 2.5mm yesterday and to now be 6.8mm 24 hours later????

Any help would be hugely appreciated. He also mentioned it could be a haematoma and that we really won't know much more until more time has passed

ETA the "good" sac is the one on the right, that contained the fetus with good heart and 6.8mm crl, annoyingly you can't see it in attached pic
Also haven't had any bleeding or spotting

Sounds possible. I think it warrants another scan.

^^^ agree!! Good luck and FX for good news.

Thanks guys. I just don't know , if it was the same fetus that was measured, that those measurements could be that far off in 24 hours... I know how tricky it can be this early on and the sonographer on the first day definitely wasn't the best but how could it be 2.6mm then 6.8?? I wish my obstetrician yesterday had measured the heart on the 6.8 mm Bub... Surely you can't get heart rate wrong and if it was significantly higher than 112 bpm, I'm guessing it would surely be a second fetus and the first guy was measuring a different fetus... I'm confused lol. Hope I've explained properly

Bumping for extra question. Des anyone think they see a peri gestational hematoma in this pic? The idiot radiographer on the first scan (who said that a 2.5 mm embryo was a perfect size for a 6 week embryo....) sent a report to my doctor saying he saw a 3 cm bleed near the gestational sac.... Help please ?

How did it go??


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