Twins!!! My first ultrasound

Beth

So one twin is measuring around 7 weeks 4 days

which is what I am. The smaller twin is measuring 6 weeks 5 days. I’m so worried. We saw both heartbeats but she could only measure the bigger baby’s. She also said she could tell they’ll have they’re own placentas. I think that means di/di twins. I go back next Thursday to check for viability. 🤞🏻🤞🏻🤞🏻💜💜💜 Anyone have any experience with this?