How to deal with the anxiety?

My wife is currently 29+2 and is getting through the pregnancy well (apart from HG which rocked her at the start but she's an absolute trooper and is handling it so well) but I can't help but be anxious about the pregnancy all the time.

I'm worried she'll fall, slip in the shower, all of that stuff. How do I cope with this anxiety? Somehow I felt more relaxed at the start of the pregnancy when she was in and out of hospital due to HG but as she has entered the third term I'm suddenly the most paranoid man on the planet