An IUD changes what a period tracker is good for. A copper IUD leaves your cycle alone, so the app keeps working. A hormonal IUD can make bleeding light, irregular or absent, and then a forecast built on bleeding dates has little to go on.
This guide covers what each type does to your period, what to log on each, how to track a cycle when you’ve stopped bleeding, and what to do after the IUD comes out.
Hormonal or copper? What each does to your period
A hormonal IUD releases progestogen into the womb. The NHS says it can make periods lighter, shorter and less painful, and it lasts 3 to 8 years depending on the type. For the first 3 to 6 months your periods might get longer, irregular or more frequent, with light bleeding in between. Some people stop bleeding altogether.
How likely that is depends on the dose. Cleveland Clinic says about 2 in 10 people with Mirena or Liletta stop having periods within the first year. Kyleena and Skyla release less hormone, so you’ll probably keep having periods, just lighter and shorter ones.
A copper IUD has no hormones. The NHS says it lasts 5 or 10 years depending on the type. You keep ovulating and you keep having real periods. They may get heavier, longer or more painful, which often improves after a few months.
How do you track your cycle with a hormonal IUD?
Stop leaning on the forecast. Cleveland Clinic says the hormone only partially suppresses ovulation, so some months you may ovulate and some you may not. An app that counts from your last bleed can’t tell which kind of month you’re in, and its ovulation day is a guess.
What’s worth logging instead:
- Every day you bleed or spot. In the first six months this is how you tell whether the bleeding is settling. Log spotting as spotting, so a light day doesn’t count as the start of a period.
- Cramps and pain. Some cramping after fitting is expected. Pain that gets worse over weeks is something to mention.
- The date it was fitted and the type. Every timeline in this guide counts from that day, and the type tells you when it’s due out.
How do you track your cycle with an IUD and no period?
Track the symptoms that still follow a cycle. If you ovulate some months, you may notice a pattern in breast tenderness, bloating, mood, energy or discharge, even with no bleed to mark the start.
- Pick three or four symptoms you’ve noticed come and go.
- Log each one every day, including the days you feel fine.
- After two or three months, look for a run of symptoms that repeats about a month apart.
If something repeats, you’ve found your cycle without a period. If nothing does, that’s a normal result on a hormonal IUD too, and it doesn’t mean anything is wrong. Our guide to your cycle day by day explains which symptoms tend to show up in which phase.
Tracking your period with a copper IUD
Track it the way you did before. Your cycle hasn’t changed, so predictions, the fertile window and cycle length all still mean what they meant.
The one thing to add is how heavy each day is. Heavier periods are the common complaint, and a record of light, medium and heavy days shows whether the first few months are settling. If you soak a pad or tampon every hour for more than two hours in a row, get help instead of waiting for a pattern. Our guide on a period lasting too long has the thresholds.
A late period means what it always meant. With a copper IUD, Cleveland Clinic advises a pregnancy test and a call to your provider.
How to track your period after IUD removal
The NHS says fertility goes back to previous levels straight away after either type comes out. After a copper IUD your cycle simply carries on. After a hormonal IUD the first bleed is your new day 1. The first few cycles can be uneven while things settle, so give it two or three before judging the pattern.
Tell your app the IUD is out, so it goes back to forecasting from your own cycle. Our guide on periods after stopping birth control covers how long a late first period is normal for.
When to see a doctor or nurse
The NHS says to get a check-up if irregular or heavy bleeding on a hormonal IUD lasts longer than six months. Get help sooner for very heavy bleeding or new pain low in your tummy. Take your log with you.
How Plum handles an IUD
We build Plum, a period tracker app for iPhone, so here’s what it does with an IUD, limits included.
Plum asks about birth control during setup, and you can change it from the Me tab at any time. It lists the hormonal IUD and the copper IUD separately, because they need different handling.
With a hormonal IUD, Plum switches to a reduced confidence mode and hides the ovulation day and fertile window. It tells you why on the screen instead of quietly changing the numbers. With a copper IUD, predictions stay as they are and Plum adds a short note, since your cycle hasn’t changed.
Spotting is its own category in Plum, so it never becomes day 1. Period days can be light, medium or heavy, and you can log cramps, mood and other symptoms on any day, bleeding or not.
Plum doesn’t remind you when an IUD is due to come out. Its birth control reminders cover the pill, patch, ring and shot. Put the removal date in your calendar the day it’s fitted. Our guide to tracking periods on birth control covers the other methods.
