Did I just have my first hot flush?

It's one day after my first radiation session, and I'm positive, absolutely positive the oncologist said that it would take a week or two before I started to feel the side effects from all this.  But the biggest ones I am most likely to get - diarrhoea and menopause.  In fact, there is no avoiding the menopause.  They're frying my ovaries, killing all the girly hormones, on a daily basis.  Menopause is my least favourite side effect.  It's right up there with hair loss.  

So here I am, sitting here minding my own business when I started to feel cold.  No big deal, the temperature is dropping, we have a big storm rolling in, and the heat is down in the apartment due to my mother staying with me who finds the heat is too much (bloody menopausal women and their intolerance for heat!).  So I got up and put a cardigan on to take the chill off.  Problem solved.  Then I started to feel blah.  Hard to describe, but basically it was enough of a blah feeling to make me think I wonder if I should check my temperature?  And then no sooner was that thought out, when my face felt like it was on fire.  Just my face.  Totally burning up, like I have a serious fever going on.  Mom is laughing at me saying my face is very red.  

So I'm sitting here shivering from the cold, with a burning face, feeling like I am coming down with the flu or something, complaining to my mother how crap I suddenly feel, when she suddenly exclaims "OMG!  You're having a hot flush!!  This is what a hot flush feels like!"  

Gee thanks.  Great.  Seriously?  Is this it?  Am I going to hit menopause after one bloody radiation session?  I don't even get a warning sign?  No build up?  I haven't had a chance to say goodbye to my ovaries and my fertility yet!

God, I hope it's just the flu......