A Cu-IUD can be inserted at any time during the menstrual cycle providing that pregnancy can be reasonably excluded (see Box 1). Recommendations for starting or switching to a Cu-IUD can be found in Table 2 and Table 3.
The Cu-IUD can be used for EC if inserted within 5 days of the first episode of UPSI that cycle, or within 5 days of the earliest expected date of ovulation (see emergency contraception protocol)
Contraception After Pregnancy | CoSRH

Table 2: Starting Cu-IUD (no recent hormonal contraception)
|
Current Situation |
Timing of insertion of LNG-IUD |
Additional Precautions required |
|
No recent hormonal contraception and no recent pregnancy
|
Any time in a natural menstrual cycle if reasonably certain the individual is not pregnant* or at risk of pregnancy (unless qualifies for pregnancy use as EC) |
No |
|
Cu-IUD within licensed duration of use
|
Any time |
Ideally abstain/use condoms for 7 days prior to change in case new device cannot be inserted unless criteria for EC insertion are met |
|
Cu-IUD past licensed duration of use
|
Any time in a natural menstrual if reasonably certain the individual is not pregnant* or at risk of pregnancy (unless qualifies for use as EC) |
No |
|
Post partum (vaginal birth or Caesarian section, breastfeeding or non-breast feeding) |
Within 48 hours after childbirth or from 4 weeks after childbirth if it is reasonably certain the individual is not pregnant* or at risk of pregnancy (unless criteria for use as EC apply) |
No |
|
Following abortion of miscarriage |
Post-surgical abortion or surgical management of miscarriage: ideally insert at the time of the procedure
Post-medical abortion or miscarriage: IUC can be inserted any time after expulsion of pregnancy
|
No |
|
Following use of oral emergency contraception |
Within the first 5 days (120 hours) following first UPSI in a natural menstrual cycle or within 5 days after the earliest estimated day of ovulation |
No additional precautions required
|
|
If there has been UPSI in this natural menstrual cycle that occurred >5 days ago AND it is >5 days after the earliest estimated date of ovulation (or date of ovulation cannot be estimated), a Cu-IUD cannot be inserted until pregnancy can be excluded by a high-sensitivity pregnancy test taken ≥21 days after last UPSI |
Condoms or bridging contraception until Cu-IUD can be inserted |
Source: CoSRH Clinical Guideline: Intrauterine contraception (March 2023)
UPSI (unprotected sexual intercourse)
*See Box 1 for how to exclude pregnancy.
Table 3: Switching to Cu-IUD from a hormonal contraceptive method
|
Current Situation |
Timing of insertion |
Additional Precautions required |
|
CHC use |
At any time if CHC has been used correctly (or criteria for use as EC are met) |
No |
|
POP (traditional, desogestrel or drospirenone |
At any time if POP has been used correctly (or criteria for use as EC are met) |
No |
|
ENG implant within 3 years after insertion |
Any time |
No |
|
ENG implant in situ for 3-4 years |
Any time if PT negative |
No Repeat PT 21days after last UPSI |
|
ENG implant in situ for >4 years and no UPSI in the last 21 days |
Any time if PT negative |
No |
|
ENG implant in situ for >4 years and UPSI in the last 21 days |
If PT negative AND all UPSI that has taken place in the last 21 days was within the last 5 days, Cu-IUD can be inserted as EC |
No |
|
Cu-IUD cannot be inserted if any UPSI occurred between 5 and 21 days ago |
Consider PT and EC. Bridge with alternative contraception until pregnancy can be excluded by a high sensitivity PT taken ≥21 days after last UPSI |
|
|
Progestogen-only injectable (DMPA) ≤14 weeks post-injection |
Any time |
No |
|
Progestogen-only injectable (DMPA) >14 weeks post-injection and no UPSI since 14 weeks |
Any time |
No |
|
Progestogen-only injectable (DMPA) >14 weeks post-injection AND UPSI since 14 weeks post-injection, all of which took place ≥21 days ago |
Any time if PT negative |
No |
|
Progestogen-only injectable (DMPA) >14 weeks post-injection AND UPSI since 14 weeks post-injection, some of which took place within the last 21 day
|
If PT negative AND all UPSI that has taken place in the last 21 days was within the last 5 days, Cu-IUD can be inserted as EC |
No |
|
Cu-IUD cannot be inserted if any UPSI occurred between 5 and 21 days ago |
Consider PT and EC. Bridge with alternative contraception until pregnancy can be excluded by a high-sensitivity PT taken ≥21 days after last UPSI |
|
|
52 mg LNG-IUD in situ for < 8 years OR 19.5 mg LNG-IUD in situ for < 5 yrs OR 13.5 mg LNG-IUD in situ for < 3 yrs |
Any time |
No Ideally abstain/use condoms for 7 days prior to change in case new device can’t be inserted |
|
52 mg LNG-IUD in situ for >8 yrs and no UPSI within the last 21 days OR 19.5 mg LNG-IUD in situ for >5 yrs and no UPSI within the last 21 days OR 13.5 mg LNG-IUD in situ for >3 yrs and no UPSI within the last 21 days |
Any time if PT negative on day of replacement |
No |
|
52 mg LNG-IUD in situ for >8 years† and UPSI within the last 21 days OR 19.5 mg LNG-IUD in situ for >5 years and UPSI within the last 21 days OR 13.5 mg LNG-IUD in situ for >3 years and UPSI within the last 21 days |
If PT negative AND all UPSI that has taken place in the last 21 days was within the last 5 days, Cu-IUD can be inserted as EC |
No |
CHC, combined hormonal contraception; DMPA, depot medroxyprogesterone acetate; DRSP, drospirenone; ENG, etonogestrel; HFI, hormone-free interval; IUC, intrauterine contraception; LNG-IUD, levonorgestrel intrauterine device; POP, progestogen-only pill; PT, pregnancy test; UPSI, unprotected sexual intercourse. †Recommendations for the 52 mg LNG-IUD insertion relate to devices inserted before age 45 years.
