Thanks KatieG, abatie for your comments and kind words.
It's hard not to get worried, but mostly I want to be proactive so that we're ready regardless of what it turns out to be. I'm in Canada, and while I wouldn't trade in our medical system for anything, the one drawback is that things can take time if you don't advocate for yourself.
Haven't noticed a huge change in colour (see, Canadian ;D). But I'll be honest, as 3rd time parents we've managed to keep crying to a fair minimum, and with the hot weather the baths are probably the same temperature as the air. Also, we haven't really been looking for that. I'll report back.