thanks for your query.
and septate uterus are entirely different entities, easily diagnosed by ultrasound
Both have high degrees of chances of abortion and preterm births, but more severe in case of septate uterus.
What you can do now is follow medical advice
, take rest, avoid exertion, go for cervical encirclage if recommended and hope for the best.
In case you do miscarry, you can consider corrective surgery before your next pregnancy.
take care and all the best.