I had a subseptate uterus that was surgically repaired due to recurrent miscarriages. We don't believe this was the cause as it was so small but I covered all bases. I still have an alterered uterine shape (a little flatter at the top) but there is no internal membrane.

The potential complications depends on the size and location of the septum and the implantation site of the embryo. There may be issues with miscarriage, growth retardation and breech / transverse positions but this (again) depends on the size and location. Many women have this anomaly with no complication at all.

How was it identified?? Who told you about it?? Your specialist should be able to answer your questions and give you an indication of its size and the potential complications for your situation.