hi i had a regular periods upto my age 50 and it stopped for about 8 months then. After that, again periods started regularly once in two months and it is still in regular terms till now. Now i am 55. Now, since two periods, bleeding will be for more than 15 days. It is not so heavy bleeding little and some clots twice a day. I am healthy, not any kind of tiredness nothing. So, my question is Is this normal or should i show this to doctor, or not please advise me.