Having a hysterectomy where only your uterus was removed doesn't change hormone levels that your ovaries produce. If you had had your ovaries removed at the time of surgery you would have experienced immediate menopause. I don't understand why your dr. said the things he did - that's not the way it works. Since you are about in the right age range and you have your ovaries, you are quite likely to be experiencing some symtoms of peri-menopause. I would go in to see your Dr. and have blood work to determine the levels of hormones in your body.