Are Fatigue, Low Libido And Increased Appetite Symptoms Of Depression?

I m 47 have a history of depression have been treated for about 20 yrs on basically the same meds. I m extremely busy working both a FT & PT job taking care of my youngest grand daughter three days a week & her older sister a couple hrs after school. My husband is a right leg amputee of 8 yrs who continued to work FT even after the amputation until he was let go from his job of 28 yrs Nov/2015. He applied for disability & was denied so, we are waiting on an appeal. So, now I ve picked up OT at my FT job & about 12 more hrs at my PT job to make ends meet. We use to vacation one or two times a year to go see my family who ve all moved down south. Over the last 4-5 months I ve put on about 9 lbs am extremely exhausted all the time yet if I go to bed early I awake in the middle of the night, where I constantly hot then cold, in & out of blankets all night & had a partial hysterectomy leaving both my ovaries in 2013. I have an insatiable appetite, have no motivation or energy to think about working out which Inuse to do 4-5 days a week or being intimate with my Husbnad. Do you think all of this is depression, perimenopause or there s something wrong with me?