hot flashes!

Okay so my mother in law doesn't believe I get frequent hot flashes she says it's "anxiety " but tbh I'm actually really clam and she tells me to relax like you telling me to relax gives me stress ! Like I'm fine just have hot flashes and she thinks she knows it all and if you try going against her she won't care what you have to say and my husband understands I have hot flashes that's why we have the room fan and another little stand fan on at night because literally I don't sleep with covers at all and it's RARE that I feel cold but god almighty what can I do so my mil will stop saying I need to relax and that I'm passing on anxiety to my baby ughhhh !!!