What Can Interfere With Birth Control Pills?

by | Last updated on January 24, 2024

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The main thing that makes the pill

not work is not taking it every day

. But other things, like vomiting or having diarrhea for more than 48 hours (2 days) may lower how well the pill prevents pregnancy. If you take any of these while you're on the pill, use condoms as a backup method.

What can you not take with birth control?

  • Carbamazepine (Carbatrol, Epitol, Equetro, Tegretol)
  • Felbamate (Felbatol)
  • Oxcarbazepine (Trileptal)
  • Phenobarbital (Luminal)
  • Phenytoin (Dilantin, Phenytek)
  • Primidone (Mysoline)
  • Topiramate (Topamax)

What makes the pill ineffective?

The main thing that makes the pill

not work is not taking it every day

. But other things, like vomiting or having diarrhea for more than 48 hours (2 days) may lower how well the pill prevents pregnancy. If you take any of these while you're on the pill, use condoms as a backup method.

How effective is birth control if he comes inside?

The pill

provides really great protection against pregnancy

— regardless of whether or not semen gets into the vagina. Only 9 out of 100 people get pregnant each year when using the pill. It can work even better if always used correctly and consistently.

How would you know if you were pregnant while taking the pill?

Women who get pregnant while using may notice the following signs and symptoms:

a missed period

.

implantation spotting or bleeding

.

tenderness or other changes in the breasts

.

Does he need to pull out if I'm on the pill?

The biggest advantage of pulling out is that it's convenient. You don't need any condoms, birth control pills or other items to practice the pull out method. Instead,

your partner just needs to pull out before they ejaculate

.

Does ibuprofen interfere with birth control?

Special Warnings with birth control pills containing the progestin Drospirenone: REGULAR DAILY USE OF NSAIDs such as ibuprofen (Advil and Motrin) and naproxen (Aleve) and some other

medications are not safe to take with birth control pills

containing Drospirenone.

Do multivitamins interfere with birth control?


Multivitamins won't affect birth control pills

. Only if you are on a supplement with high dose magnesium, such as a specific antiacid not just a multivitamin.

Can a guy finish in you with an IUD?

The IUD works by creating an environment in your uterus that's inhospitable to sperm and conception. Depending on the type of IUD, your uterine lining thins, your cervical mucus thickens, or you stop ovulating. However,

the IUD doesn't block semen and sperm from passing into your vagina

and uterus during ejaculation.

Is Plan B necessary if on birth control?

The pill keeps preventing pregnancy during the week you get your period (the “break week” as you called it, also sometimes called the placebo pill week). So if you've been taking your pill correctly,

there's no need to use emergency like Plan B

.

What happens if you get pregnant on birth control?

Becoming pregnant while on birth control does

increase your risk of ectopic pregnancy

. An ectopic pregnancy occurs when a fertilized embryo attaches outside the uterus, often in the fallopian tube. This is a very serious, life-threatening problem and should be cared for immediately.

How likely am I to get pregnant on the pill?

Birth control pills are considered effective, but not foolproof. They're

about 99% effective

when you take them correctly. But that's if you take them perfectly, meaning at the same time each and every day. If you don't, your odds of becoming pregnant go up to 9%.

Can you get pregnant on your week off the pill?


Yes

. When you're on the pill, it's okay to have sex anytime, even during your period week — the week when you don't take the pill or take placebo pills instead. As long as you've been taking your pill every day and starting your pill packs on time, you're protected from pregnancy even during that off week.

When are you most likely to get pregnant on the pill?

In general, research suggests that for women who consistently have periods every 26 to 32 days, conception (getting pregnant) is most likely to occur during

days 8 to 19

.

Is there a way to get pregnant on birth control?

None of the methods used for birth control are 100% effective.

There is a possibility, although rare, of getting pregnant

while on birth control pills. Birth control pills are over 99% effective when taken correctly and regularly as prescribed.

Can stress cause birth control to fail?

Folks dealing with stress or depression might have a

harder

time dealing with side effects from birth control. In fact, the same researcher found in earlier studies that women who felt depressed and stressed were more likely to notice changes in their weight or mood; they were also more likely to quit the pill.

Maria LaPaige
Author
Maria LaPaige
Maria is a parenting expert and mother of three. She has written several books on parenting and child development, and has been featured in various parenting magazines. Maria's practical approach to family life has helped many parents navigate the ups and downs of raising children.