Suggest Treatment For Hot Flashes In A 61 Year Old

Hello! I am a 61 y/o female, on BP meds for the past 5 years, no other known health issues, reasonably good health, but about 25 lbs. overweight. For the past few months, I have been constantly tired. I am retired and end up taking one or two naps a day because I just can t stay awake. Each nap lasts abut 2 hours and it is a very dep sleep. Yes, I do sleep well at night. I fall into a very deep sleep for about 7 hours. I have been gaining weight due to the fact that I have slowed down, but I am also incredibly hungry....stomach needs food!....about every 2 hours. Now, for the past few weeks, I have started having late night periods of intense, inner heat. Similar to a hot flash, but it lasts for several hours and I have to wear very little clothing and turn the a/c down to 70 to cool off. Any ideas of what may be causing this?