Folded uterus?

want a rainbow baby

Before we miscarried, I had an ultrasound done and the lady asked if I had a c-section with my first. I said no and ask why. She said there was a fold in my uterus and that's common with c-sections.

I miscarried 4 days later.

And because I miscarried, I'm wondering if it could be because of that? I know I'm looking for a reason why I miscarried but I would like to know if this was a problem for anyone else?