Yes, I Had A Hysterectomy In 1997. I Was On

Yes, I had a hysterectomy in 1997. I was on Premarin 1.25 until April 2014. With all the bad talk hormones were getting I felt that I may need to come off the meds and take something over the counter. I have been taking estroven (plus energy) since April. The hot flashes just won't go away! I have hot, then cold. Should I go back on Premarin? Can I take Premarin until I die? I need advice.