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How many couples out of 100 will get pregnant if they have unprotected sex for a year? Answer: 85-90 Birth Control
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Fertilization ● the joining of the egg and sperm ● resulting in a zygote Fertilization, Implantation, and Conception
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Implantation ● fertilized egg attaches to the lining of the uterus ● Pregnancy Begins Definitions (cont)
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● Egg is released from the ovary ● Egg remains viable for 24-36 hours ● 200-600 million sperm ejaculated ● Sperm viable for up to 7 days (3-5 average) ● 6-10 days later, Zygote implants How does pregnancy begin?
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Pregnancy in the US About 850,000 teen pregnancies each year, 85% are unintended.
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Another name is contraception contra = against, conception So it will prevent…Fertilization or Implantation Birth Control
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● Take the egg out of the equation and others Take the sperm out of the equation. Some methods…
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What methods have you heard of? Birth Control
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● The pill is just one type of birth control. ● If you mean the pill when talking about birth control say the pill. Birth Control
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the number of women out of 100 who get pregnant each year using a specific method of contraception Perfect: Failure rate with correct/consistent use Typical: Failure rate with user mistakes Failure Rate
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● The difference between perfect use failure rate and typical use failure rate. ● The larger the difference, the larger the margin of error due to user mistakes. Margin of Error
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Contraceptive Options Hormonal Barrier Other
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Hormonal Methods Contain hormones Prevent ovulation* Thicken cervical mucus to prevent fertilization* Reduce the endometrium Prescription only – except EC *EC works a little differently
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Hormonal Methods Implanon Depo-Provera Vaginal Ring (NuvaRing) Patch (OrthoEvra) The Pill Emergency Contraception
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Hormonal Methods Advantages Regulate periods (pill, patch and ring) Less menstrual cramping, flow, & PMS Fewer ectopic pregnancies Very effective pregnancy prevention Low margin of error
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Hormonal Methods Disadvantages NO protection against Sexually Transmitted Infections Several possible side effects (ie. nausea, breast tenderness, increased appetite, mood changes) Less period regulation with progesterone only methods (ie. Depo-Provera and Implanon)
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Method Type Failure rate How does it work? How is it used? Advantages & Disadvantages Where you get it.
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Implanon ● 1 sub-dermal implant in arm for 3 years ● Highly effective ● Progestin only ● Irregular bleeding
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One shot every 12 weeks By prescription & administered at health center Irregular bleeding or loss of period Slow return of regular menstrual cycle Depo-Provera
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Vaginal Ring (NuvaRing) Insert flexible ring into the vagina for 3 weeks ½ the amount of hormones of the pill Less effective when using oil-based treatment for yeast infections
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The Patch (OrthoEvra) One new patch per week for 3 weeks; week 4 menstruation occurs By prescription Clean dry skin
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1 pill every 24 hours Less effective when taking certain antibiotics The Pill
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Over the Counter - Plan B -best if taken within 72 hours Prescription - Ella - within 120 hours (best if taken within 72 hours) Prevents pregnancy 75% to 89% of the time Will not terminate an existing pregnancy Emergency Contraception
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Barrier Methods Prevent sperm from entering the uterus & reaching the egg by putting a barrier between them
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Barrier Methods Male Condoms Female Condoms Sponge
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Male Condoms Highly effective with correct use Latex or polyurethane One time use only Very good STI protection
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Made of polyurethane Inserted into the vagina One time use only Very good STI protection Female Condom
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Sponge ● Can be inserted hours before intercourse ● Must remain in vagina for at least 6 hours after intercourse ● Blocks, absorbs and kills sperm ● Over the counter ● Can cause irritation ● Possibility of Toxic Shock Syndrome if worn longer than 30 hours
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Abstinence Prevents the egg and sperm from meeting Not having oral, anal, or vaginal intercourse Highly effective when used perfectly Some STI protection
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Pulling the penis out of the vagina before ejaculation Requires great self-control & experience Much better than using no contraception (using nothing has an 85 out of 100 failure rate) No STI protection Withdrawal
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