Nub theory guesses?!

Kennedy • Married to my soulmate since 7.4.2020!💍💞 We have a 4 year old son, who took a year and a half to conceive! We are expecting baby girl March 11th 2021 after 2 1/2 years of ttc with fertility treatments 💖
13 weeks (measuring 13 weeks 2 days) and this was Tuesday. Any guesses? Sent to the gender experts and haven't received my result yet! We find out in less than 2 weeks on September 10th! So impatient. Lol its a different kind of two week wait.