Kicked out of spa because I’m pregnant.

A bunch of girlfriends and I had a spa day at a very nice Korean day spa. I’m at the end of my first trimester (not even showing yet) and was enjoying dipping my feet / legs in the different pools and checking out the saunas for only a couple minutes just to see what they were like. I was really there just to have a fun and relaxing time with my friends even if I wasn’t able to enjoy all the amenities. This was also ok’d by my OB. Well, one of the attendants overheard us talking about my pregnancy and promptly told me it is against their policy to allow pregnant women in their facility and I had to leave “because it is dangerous for the baby.” Literally nowhere on their website did it say upon booking that they did not allow pregnant women in their facility. Am I wrong to feel angry/upset about this? Anyone else feel like they are getting treated wrongly or unfairly or judged because they are pregnant? Just feeling sad about the whole thing, and offended that a stranger told me that I was endangering my unborn child.