First pregnancy I had stopped working by then, but still walked or cycled everywhere, as we didn't have a car. Had no issues, really. I just tried to be sensible about it and rest when I needed to.

Second was a bit harder. By 32 weeks I wasn't cycling anymore, but did spend a lot of time chasing after my toddler. Have recollections of crying at Bunnings because it was so much walking with a massive belly and toddler who wanted to be carried. I wasn't as fit, and I think that impacted a lot.