**Core Concept**
The intrauterine contraceptive device (IUCD) is a long-acting reversible contraceptive method that prevents fertilization by releasing progestins or copper ions. It is contraindicated in certain situations to prevent potential complications or decreased efficacy.

**Why the Correct Answer is Right**
The correct answer is associated with a condition where the IUCD is contraindicated due to the risk of infection and pelvic inflammatory disease. The IUCD can act as a conduit for bacterial migration and increase the risk of infection in the uterus and surrounding tissues. This is particularly concerning in patients with active pelvic inflammatory disease or those who have had previous pelvic infections.

**Why Each Wrong Option is Incorrect**
**Option A:** This condition is not a contraindication for IUCD insertion. In fact, IUCDs are often recommended for women with a history of PID to prevent recurrent infections.
**Option B:** This is not a contraindication for IUCD insertion. IUCDs can be safely used in women with a history of ectopic pregnancy.
**Option C:** This option is incorrect because IUCDs are not contraindicated in breastfeeding women. In fact, IUCDs do not affect milk production or the baby's health.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that IUCDs are contraindicated in patients with active pelvic inflammatory disease or those with a history of pelvic infections, as it can increase the risk of infection and complications.

**Correct Answer:** D. Active pelvic inflammatory disease.