Hi JulieJ. You are right to point out other health possibilities but it is fair to say that most middle-aged women who have heavy night sweats should first have their hormone levels checked. It is a simple blood test, nothing more.
Just another thought, I believe the memory loss is temporary and if you do find yourself searching for words, or forgetting the name of a simple object, then do a crossword every night. It brings the brain back into working out. I know it sounds simplistic but it worked for me. Also, drinking a bit too much increases hot flushes (so someone told me!)