7 weeks 3 days! Ramzi?

Mallory • I`m 27 and expecting my first after 7 months of TTC with endometriosis, PCOS and hypothyroidism.
This is the first look at our little bean. A few days behind where I thought we were but still got to hear the heartbeat. I'm having a hard time understanding the Ramzi method. I've heard on right is girl and left is boy unless its transvaginal?  This ultrasound was done transvaginally