Pregnancy refers to the state of being pregnant. Becoming pregnant several months after taking contraceptives may be caused by improper use, missed doses, ineffective medication, expired medication, or other reasons. It is important to closely observe your own condition. Here are some possible reasons:

1. Improper Use:

Contraceptives can achieve the effect of emergency contraception and prevent unexpected pregnancies. If the dosage taken is too small, it may affect the contraceptive effect and lead to pregnancy. It is necessary to follow the doctor's instructions for medication use.

2. Missed Doses:

If there are missed doses during the use of contraceptives, it can affect the contraceptive effect. It is necessary to follow the instructions on the package for medication use.

3. Ineffective Medication:

Contraceptives need to be taken within 72 hours after sexual activity. If the medication is not taken as prescribed, it can affect the effectiveness of the medication and lead to unexpected pregnancy. It is important to take the medication as prescribed.

4. Expired Medication:

If contraceptives are used after the contraceptive window has passed, it may lead to the medication being ineffective and unable to achieve the contraceptive effect. It is necessary to use the medication within the prescribed time frame.

5. Expired Medication:

If the contraceptives have expired when they are used, it can lead to contraceptive failure and unexpected pregnancy. It is important to check the expiration date of the medication when purchasing contraceptives.

In daily life, it is essential to cultivate good habits, maintain regular schedules, and practice good hygiene before and after sexual activity.