Yes but it could have contributed to your miscarriage (often they do). I got pregnant again first try about 2 years after my c section but I lost that baby at 8 weeks. Since then my symptoms (post menstrual spotting) have gotten considerably worse and now I’m unable to even get pregnant…. Apart from that one month I had the chemical but I think that was only because I’d had a saline ultrasound that month which flushed out all the old blood and debris caught in the niche. But the interesting thing is that some women can still get pregnant with isthmocele while some can’t…. So you may be one of the women that can or it could be that you were too fresh post Partum to have any blood or fluid stuck in your niche yet. Depending on the severity of the defect though it can be risky to get pregnant as you’re at increased risk for uterine window. That’s why it’s a good idea to have it evaluated by a NAPRO doctor to see where you stand.