I’ve looked up Vanishing Twin Syndrome, and almost every article I have seen said that VTS typically only happens during the first trimester of the pregnancy.
But here’s the catch: My mom didn’t realize or know she was pregnant with me until 7 months into the pregnancy. And when she found out, the ultrasounds did show two babies. Me and my twin.
If Vanishing Twin Syndrome usually only occurs during the 1st trimester, is there a reason why it can happen so late during the pregnancy, as in the case with my mom and my twin? Or is there technically another name for this specific situation?


How sure are you about that? She would know if she gave birth twice, and a 7 month old fetus doesn’t vanish. There’s something she’s not telling you.
The second fetus may have been terminally underdeveloped, and small enough to be delivered without realizing it was a second baby. They may have told her there was no second baby or that it was part of the afterbirth, or she may have misunderstood what they said.
Doctors have been known to lie to patients in the past, but the practice is not very common anymore in most cultures.
Because my mother has never lied to me. So why would she lie about something like this?
That’s how im sure about it. So if there’s any misinformation about it, it’s not from my mother. The doctors, maybe, but not my mother
It’s possible she’s just wrong, not lying.
How do you know that?
Because my mom is literally the most honest person I know, that’s how
Ok look, if you trust your mother completely, and you think she isn’t lying, that’s fine. But people can be fed information they think it’s true and then spread a falsehood, thinking they told the truth. Also people forget and misremember stuff. So maybe the doctors lied or didn’t tell her something. Or maybe she forgot.
Or she at least seems like the most honest person you know.
Like the other guy said, the second fetus was probably very small, so it’s possible that it “vanished”. But for sure there weren’t two developed 7 month babies in the womb.