You're fine curlie

I believe its a 'heart shaped' so not a complete divide but it must be pretty mangled in there as I had a septum (divide) in my cervix and vagina. (which was removed 17 years ago)
well my 1st son was 35 weeks and weighed 4lbs 11oz
my 1st daugher was 35 weeks and weighed 5lbs 8 oz
my 2nd daughter was 31 weeks and weighed 3lbs 15oz
my 2nd son was 28 weeks and weighed 2lbs 14oz
and my baby girl was 35 weeks and weighed 5lbs 10oz
if they think you're going to go preterm there are loads of things they can do

I have known a woman who had a bi-coruate uterus and needed induced

so it isnt all doom/gloom, but it does all depend on the severity and thats something you wont know until further into the pregnancy.
have you had any bleeding out of interest?