I Had Estrogen Positive Breast Cancer In 2006 At 39

I had estrogen positive breast cancer in 2006 at 39 yrs. old and subsequently had a bil. Mastectomy. I had a Total hysterectomy with bil. Salpingo- oopherectomy about 2 yrs. ago due to hemorrhagic cysts on my ovaries( no new cancer detected). (BRCA neg.). My Dr. Allowed me to have a minivelle estrogen patch which does keep me from experiencing hot flashes.. However I am having issues with depression and frequently tearful. I am 50 yrs. work out regularly and in otherwise good shape. Is it normal 2 yrs. after surgery to be feeling this way?