what the...

So I work Thursday, Friday Saturday. So my first day back since last week, apparently our shop is being remodeled. The painters were in today working on the break room, I went to grab my stuff to run and get lunch and one asked me when I was due(I'm 29 weeks and noticeably/obviously pregnant) I told him we talked for a minute and one guy was like "yeah you're getting big!" I didn't see who said it so I just kind of smiled and walked out. But like what the hell? I mean I kind of thought it was funny because again it's obvious im a petite girl with a basketball but it was like you don't even know me and that's kind of rude to just blurt out? I really didn't know how to react I was just kind of shocked lol. Has this happened to anyone with a stranger?