Glowing?

I've heard the term "glowing" tossed around when people get pregnant and now I'm beginning to wonder what the word really means.  I tend to think of someone looking happy and radiant when I hear the word glowing.  However, it's been used on me several times lately and I'm beginning to think it's really a code word for something else.  Here are some more reasonable definitions in my opinion:

Glowing - adjective - tired.  I felt exhausted one day and so Hubby and I went out to eat.  Someone who had seen my facebook announcement saw me in the restaurant, came over to me, and told me I looked glowing.  Now mind you, my hair was pulled up into a messy ponytail, I was uncomfortable from wearing pants that hurt, and I was hungry.  I'm pretty sure in this instance, I was a glowing, tired mess.

Glowing - adjective - put thought and effort into how one looks in public.  I must admit that I've been washing my hair in the morning and letting it dry as the day goes on.  I've been wearing more of what's comfortable and less of what's stylish these days as I'm growing and the weather is unpredictable.  One day, I put some effort into my outfit and makeup.  Now mind you, I said some effort.  I put on a cute top and smeared a little makeup onto my face.  People came up to me and said I was absolutely glowing.  Is this a nice way of saying, "Way to go!  You dressed yourself AND put some effort into your hair and makeup!"???

Glowing - adjective - chunky.  My pants don't fit right.  My already large chest doesn't help my appearance.  On a day when I was feeling like "5 pounds of sausage in a 3-pound bag," I was told that I looked glowing.  Was that a nice way of saying, "Woah!  You're gaining weight!"???

At any rate, glow on, my friends!  However you'd like to define it!