Why the ultrasound

Ebony

My dr had put in for labs today to see how far along I am approximately, they just called back and said my levels were nice and high and wants to do an ultrasound on Wednesday. Of course I didn’t ask how high and why 🤦🏽‍♀️. This is number 4 for me and never have I ever had an ultrasound at 6 weeks (I’m guessing 6 based off last period). Any ideas?