Long-acting contraceptive pills usually take effect after one week, taking long-acting contraceptive pills are prone to cause liver and kidney function damage. It is best to take regular blood tests to check the liver and kidney functions during the use of the pill, and it is also easy to cause endocrine disorders, menstrual disorders, etc. It is best not to take the pill frequently. Be careful not to stop taking the long-acting contraceptive pill suddenly, so as not to cause withdrawal bleeding. If you don’t want to get pregnant, you can take other contraceptive methods, such as contraceptive rings, condoms, etc. You can also have intercourse during the safe period, which is safer and will not have adverse effects on your body. But after taking the pill if there is a delay in menstruation, this may be a side effect of the contraceptive pill, it is best to check the hormone six, need to be under the guidance of the doctor reasonable use of medication, usually pay attention to get enough sleep, do not stay up late and so on can improve the situation of menstruation.