Endometriosis UK
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Merina coil advice needed

Iv had my coil in now for 4years since having the coil placed my periods stopped, lately I've been having some pervic pains and pains during intercourse, I've also been having kind of a browny colour blood in my underwear and noticed today it was a deep red colour after wiping myself after a wee. Can anyone please tell me if this is normal as I'm starting to get worried now. Look forward to hearing from u x

5 Replies

It sounds like spotting which can happen at any time with th mirena, just means a bit of the uterus lining has come away and bled a little. Could be cause by over exertion (including sex) but lifting heavy things, overdoing the exercises etc.

It should settle again.

The other thing to be aware of is that Mirena lasts on average 5 years, which means it can run out sooner than that too.

If this spotting continues over a longer period of time (3 months worth of periods) then perhaps it is telling you it needs replacing.

The lining has been in the uterus for a VERY long time and like all blood things it will turn darker and darker over time so any spotting of dark sludge is old lining -if you get a fresh bleed then that is bright red as per usual period blood. If it is already darkening then chances are it is new-ish and got stuck on the way out the cervix for a while.

You could visit the GP to check for infections if the current spotting carries on more than a week. If it clears up then it was just a phase and may happen next month again of the coil is running out or might not happen till it does run out.

By which time your 1st proper period without the coil will be significantly dark sludge so don't be shocked that is quite normal.

It is why endo cysts are called chocolate cysts..the old blood has lost its oxygen and like scabs on the skin it turns brown when it dries up and gets old.

I have had a few of these spottings with mirena....nothing anywhere like a full period.

I have had two proper periods also earlier this year, a month apart, but just as I was looking to get the mirena replaced they stopped and the mirena woke up again and went back to work...thank heavens.

As for th sexpain issues that could have any number of causes, the main ones being scar tissue or adhesions on the cervix and vaginal walls inside and/or outside of it.

No cure for that aside from either taking pain killers before the deed, or abstaining and finding other ways to be intimate.

Mirena doesn't stop endo that is already in place, it will stop more endo from backflow of menstrual blood up along the fallopian tubes, but if you did have remaining endo before the mirena went in then it could still be active and now getting painful if it has reached sensitive nerves.

So the spotting is Normal for mirena, the pain issues are your body telling you something isn't well, and perhaps that does need to be discussed with a GP then a gynae as they may want to do more investigations in to the state of your endo and perhaps check you out for cysts too.


I had this happen before I had my second coil fitted. I recommend asking for a D and C when you have it replaced it does stop the bleeding after intercourse.


Hi, I had the coil for 4 and a half years and bled throughout - dark blood, not very much, also after intercourse. However all my pains etc came back at about 4 years. I've just had a new coli fitted, maybe it is time you had yours changed? Hope it helps x



This sounds like what I've been through this year.

It started back in febuary. I started to feel tired and never had any energy. Doctors kept trying to tell me I probably had an STI. ( which I'd just like to say alway came back clear.). But then in July. I fell very ill again with endo. I couldn't move.

I found out because my coil was runnin out of hormones it had kick started my reproductive system. To cut a long story short. I've been off work since July. I had to have two surgery. One emergency. Because my cyst had ruptured and i had blood around my liver. The other one was to remove endo. A cyst and I also had an ovary stuck. Also had my coil changed. That was last week. And I can't begin to tell you how much better I am feeling.

My advise to you is get your coil changed ASAP. I wish I had done it back in febuary when I started to feel run down again.

I hope this helps.

Kind regards.


1 like

Maybe it's time for the coil to be changed?


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