Anatomy scan worries!!!

So today was our anatomy scan. This ultrasound was the longest out of all my kids!! I’m worried something is wrong! Tech had to bring in another tech to look at babies heart. They told us not to worry that they can’t get measurements of babies heart cuz baby was facing my back. But they also did a transvaginal ultrasound cuz they wanted to check if my cervix was opening!! Why would it be opening!! I’m just freaking out that something might be wrong! They want me to come back in 3weeks. On the bright side we found out baby is a girl!!! 😊 💕 🎀