Hello can the side effects of emergency contrac...

Is it possible for one to get pregnant even after taking the pills the correct way? 
Yes there is a low chance of failure after using the contraceptive pills in about 1-3% .
How can pregnancy be delayed?
You can delay pregnancy by using medical treatments or contraceptive methods, which are used according to the doctor’s recommendation, and after taking the medical history, motives for use, and precautions for use, as
There are many methods used to prevent pregnancy, including:
Hormonal IUD: Preferably in women over 35 years old.
condoms
Birth control pills that contain estrogen and progesterone, such as Yasmin.
Pills that contain progesterone, such as Microlut.
Contraceptive injection.
Contraceptive stickers.
other means.
What are the contraindications for the use of contraceptive drugs?
It is forbidden to use contraceptive drugs if you suffer from any of the following diseases:

• treatment sensitivity.
• breast cancer .
• Cervical cancer .
• Heart disease.
• Liver diseases .
• A sick history of clots.
• Deep arterial clots.
• other reasons .

Advice in your case:
Use of medications and contraceptives as recommended by the doctor after the medical examination.