Can he see it ?

Anastasia • 22 years old 🦄 | Iceland 🗻 | Engaged Soon 2 🐝 mom of ✌ babies 💕 2 & a half year old baby boy 💎 baby #2 due in feb 2018 👑
I just got my bfp, i have pcos and was on <a href="https://glowing.com/glow-fertility-program">fertility medications</a>. My ob wants to see me soon to make sure everything looks right and etc.. i got an appointment at 4w+4d, will he be able to see a sac so early ? With a vaginal ultrasound btw