Jessie
I would seek 2nd opinion I was told I had bicornuate uterus (high possiblity) from an ultrasound (internal) -by a specialist who did the scan at a women's u/s centre.Infact I didn't - the only way they know for sure is to have a laproscopy/hysteroscopy.

I subsequently had a lap with another fertility specialist - to clip my damaged tubes but they discovered I didn't have bicornuate uterus ... I was doing IVF for other reasons too. I had some kind of small septum too.

A friend was also told she may have had a bicornuate uterus but she had septum - similar loking on u/s but very different consequences ... she had lost a few babies to m/s - because they say embryo can implant on septum wall which hasn't good blood supply as uterus - so they miscarry.

Her Specialist recently operated over two operations (laproscopy) removed her septum and in 2 months she can TTC again.

Please go and get another opinon - the FS I saw said you can only tell my lap and looking inside the uterus too - hysteroscopy - to see what is actually there.