Missed bicornuate uterus

🌿Amanda🌿 • Mama to my sweet boy 7/11/18 💙 Excited to meet #2 July 2024

Has anyone been diagnosed with a bicornuate uterus after having their first baby? I had a healthy baby in 2018, but I had bleeding early on and was put on progesterone. He was also breech so I had a C-section. Now realizing that it was likely from my uterus shape. In none of my scans or my csection was it ever mentioned to me about this. Been TTC #2 for a year and just had an HSG and was diagnosed with bicornuate uterus. How was this missed prior??