Running while pregnant?

Wanted to get other Mamas opinions. I’ve already spoken with my doctor and she said running while pregnant was fine. I’m 28 weeks pregnant. And my SO last night had some concerns and feels like it’s not good for our baby’s brain. I’ve done research and everything seems to say it’s fine. I run and fast walk a couple to a few miles a day. Just wanted to see how many other mamas out there have ran while pregnant and baby be just fine? Just so my SO can feel more comfortable with me doing it.