Hormone levels are borderline

I have not had a period since 10/2012. Throughout the years I have been told that I was definitely in menopause. About a or two ago I had some spotting, no known reason, the past couple months I have had severe cramping and spotting after. I got an U/S, it said my endometrium was thick, had an endometrial biopsy, waiting for results. The blood work shows that my FSH level is 25.2, which is just on the border. So now I'm concerned there may have been another reason for not menstruating for 8 years, weight, diabetes, and that it's going to start up again, probably after I have the gastric bypass. Wouldn't a level of 25.2 8 yrs post-menopausal be too low a number? Any similar experiences?