text: hot flashes in your 30's? what should i do?  i am 31 years old and have had occasional hot flashes for 2 years.  it's quite embarassing!  at first i thought maybe it was anxiety but i'm not so sure anymore.  i've had my face get super red and hot just sitting at the computer by myself.  should i talk with a doctor?  if you have hot flashes, how long do yours last?  sometimes my face stays red for quite a while. i would suggest you talk to your doctor.  there are a few things that can cause hot flashes but only your doctor will be able to tell you for sure what's causing them.    and try not to worry about it.  ;-)