Facial Freakout

Liz • I'm 31, love traveling, scuba diving, and enjoy doing yoga and sports. Currently expecting our 1st baby on December 24!
I have been getting facials from the same esthetician for 2yrs. I got one today, first since getting pregnant...currently at 23 weeks, when she put the steamer near my face I started feeling nauseous and couldn't catch my breath and started to panic a bit.
I had to have her stop and let me sit up and have some water till it subsided.
Has anyone else ever experienced that before??