I can only go from my experience, but I think you should discuss this with your doctor.
I suffered terribly with endometriosis and the only HRT I could go on was Lival, even though I've had a hysterectomy (left my ovaries).
I was really scared about the risks of HRT as I am only (I say only but I feel about 90 at the moment) 38 years old, but my doctor assured me that the risks are minimal due to my age and not staying on HRT for more than 5 - 10 years.
After taking two weeks to research I started Lival and only after 2 weeks I noticed my hot flushes are minimal.
I do believe we are all hormonally and genetically different and one thing might be good for one person but not another. Take what you read with a pinch of salt and discuss and research things before you decide you are happy to try HRT or natural methods.
I haven't been here very long, but I have found these boards extremely helpful and supportive, I hope you do to.