C-section mamas

I am currently pregnant with baby #2. I got pregnant about a month before my son turned 12 months. I have a lot of weird cramping and pains near my c section scar.. is that normal? I remember having pretty bad round ligament pain the first time around but I was also super fit and going to the gym then. I read some horrible things about VBAC and what can happen to your uterus after a c section if u have a vaginal birth and I’m completely freaked out.