My Health Question Is...I'm 48 Year Old Female With Several

my health question is...I'm 48 year old female with several things going on..profuse sweating I can just be sitting at my desk at work (I'm a medical coder) and start sweating out of no where. I sweat when I am sleeping but recently have just not felt 'normal' light headed and just 'foggy' this comes and goes. I also feel like my heart beat is not fast enough. should I go see my gyn doc or my family practice doc. is this the beginning of menopause?