Different types of birth control start working to prevent pregnancy at different times.
Nexplanon is a small rod that contains the hormoneprogestin.
A healthcare provider inserts under the skin.
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A backup contraceptive method should be used during that one week to help prevent pregnancy.
Injection
The injection is a shot of contraceptive calledDepo-Provera.
It takes seven days for effectiveness to begin if it is taken after day seven of the menstrual cycle.
It is effective immediately if taken within the first seven days after themenstrual cyclehas started.
Depo-Provera is injected into the muscle or another subcutaneous area.
Birth Control Pill
There are two types of hormonal birth control pillscombined birth control and progestin-only pills.
Some people choose to start taking their combined birth control pill on a different day of their menstrual cycle.
Progestin-only pills, or mini pills, are taken when someone cannot tolerate estrogen.
The mini pill is also effective immediately when taken on the first day of the period.
How Long Until Birth Control Regulates Periods?
Some people take birth control pills to regulate their period.
When Does Birth Control Work After Missing a Dose?
Missing a birth control pill can causepregnancy.
They should then take the next pill at its normal time.
If they miss two pills, they should use abackup birth control methodfor seven days to prevent pregnancy.
These IUDs are effective for three to eight years, depending on which brand is used.
Thecopper IUD(Paragard, Miudella) releases a tiny amount of copper and is immediately effective.
Paragard (but not Miudella) can also work as a form of emergency contraception.
Hormonal birth control is an effective method of preventing pregnancy when taken as directed.
Using a condom correctly can help to prevent most STIs.
Patches
Hormone patchesthat are applied on the first day of the menstrual cycle start working immediately.
Patches use bothestrogenand progestin (as combined birth control pills do).
A patch is applied for one week at a time, then replaced with a new patch.
If it’s inserted after that, it takes seven days to become effective.
The vaginal ring is inserted into the vagina and slowly releases the hormones.
The ring is left in the body for three weeks and then taken out for one week.
The procedure is usually effective immediately.
About one in 200 people may still get pregnant after having the surgery.
Scheduling the surgery right after your period can help to avoid an already fertlized egg from reaching the uterus.
Condoms and Diaphragms
Condomsand diaphragms are immediately effective at preventing pregnancy when used correctly.
They are considered a barrier method of birth control because they physically prevent the sperm from reaching the egg.
They are only effective for about an hour after insertion, and should be reapplied before having sex again.
When spermicide is used correctly, it’s about 79% effective at preventing pregnancy.
UpToDate.Patient education: hormonal methods of birth control.
Centers for Disease Control and Prevention.Contraception.
Centers for Disease Control and Prevention.When to start using specific contraceptive methods.
Eunice Kennedy Shriver National Institute of Child Health and Human Development.How effective is vasectomy?
National Library of Medicine.
Johns Hopkins Medicine.Tubal ligation.
Planned Parenthood.How effective are diaphragms?
Planned Parenthood.How do I use spermicide?
Planned Parenthood.How effective is spermicide?
