James dumped all the bags and rushed over to give his wife, his incredible wife a huge hug and particularly deep kiss. Sure, that's how they'd gotten trouble in the first place most likely, but at this point, it's not like she could get more pregnant.
Besides, honestly James was happy. They'd decided to 'wait' after Harry for another one and then just never gotten around to it. Sure, it wasn't planned, but that didn't remotely make it unwanted.