Hi I am 44, I have had two mirenas and they been brilliant, virtually no periods at all. I have had the second one for 5 years, do I need to get it replaced as soon as possible or can I leave it a bit longer?. My second one was quite painful when it was replaced and the bleeding took a little while to settle down and if I could avoid having this one taken out unnecessarily that would be great. I assume my fertility is currently declining rapidly due to my age.