I am a 40 year old woman and 4 months ago I noticed that towards the end of my period the blood would be dark brown. Actually the blood during the period all seems a little bit darker, but definitely after the first 2 or 3 days it is dark brown. I am on schedule and have no other differences to my cycle. Is this normal? The start of menopause? Or could it be something more serious?
Please advise.