How old do you have to be till you start getting hot flashes?

I'm female and 26 I'll be 27 in september I know menopause dont start this early but its always hot for me and sometimes I get that heat flush and start to break out into a little sweat and my upper lip starts to sweat I'm sweating a bit now its not really sweat just a little moist and I dont know if its really hot in the house or is it just me? So if anyone can help out that would be great! And thanks in advance!