Beatrice, it's not uncommon for this to happen. There are MANY women this happens to. You're not alone in this.
The reasons for this can be anything from hormonal fluctuations brought on by a lot of stress to fibroids that haven't yet shrunk to benign growths called polyps (most common reason for post menopausal bleeding) and right on up to the most worrisome problem, endometrial pre-cancerous or cancerous conditions. Having said that last one (which no one wants to consider), it isn't usually the cause of post menopausal bleeding/a return to cycling. It's the most uncommon but, of course, must be ruled out.
The first thing is, you really do need to make an appointment with your doc. It's likely nothing much to be concerned about but, after 3 years of having had no periods, it's something that really does need to be looked at to see what is going on.
Tests may include:
Blood tests to check hormonal levels such as FSH, LH, Thyroid levels such as TSH, T3 and T4 levels (thyroid problems are common reasons for this happening) and, progesterone, estrogen levels etc..
A Transvaginal ultrasound to check for endometrial thickness, (anything over 4 to 5 mm's post menopausal warrants an endometrial biopsy to see what the pathology makeup is of the uterine lining) as well as for ovarian cysts, fibroids and sometimes, they can detect polyps.
More often than not, the doc will want to do an endometrial biopsy (office procedure...takes about 10 minutes in total from start to finish, including preparation and positioning on table etc.).
I have also heard of women who have gone long stretches of time without having a period due to thyroid problems, extreme stress, extreme weight losses etc., and have not really been menopausal all along. In other words, other factors have created the lack of menstruation. So, if you have lost excessive amounts of weight, over exercised, poor nutrition or, been under tremendous stress...all of this may have contributed to a lack of periods but, not necessarily been menopausal changes.
Again, there are all sorts of very common and benign reasons and the more serious reasons are not that common in women under 60 to 65 but, it HAS to be investigated to be on the safe side. Make that appointment with your doc and at least run it past him/her and let them be the judge as to what is best to do or not do.
Let us know! Keep us updated. We are here and many of us know what that feeling is like to be in the dark about what is happening. It can be troublesome to annoying to say the least. Many of us understand it as we've been there. :)
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