I have to agree with your gyn, symptoms of menopause can start early, even though you have a long way to go before you reach true menopause.
A really good book to read is Dr. John Lee's book *What your doctor may not tell you about menopause*. I thought this was an excellent book and very insightful.I belive the symptoms you are showing are peri-menopause and could continue until your 40's with more irregularity in your cycle or heavier bleeding, etc, or other symptoms developing right through to true menopause.