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Re: sex and prevention of pregnancyFrom: R. Daniel Braun, MD (anonymous@obgyn.net)Fri, 29 Sep 2000 09:28:16 -0500 (CDT)
At Fri, 29 Sep 2000, natasha wrote: > >My name is natasha and I am a college student taking a psychology course >at. I have a question that wasnever answered in the text. If a person >wants to have sex, but not get pregnant. When is the safest time to >have sex during their ovulation period so as to not get pregnant. I've >heard five days before period and five days after. Which one is it, or >is it either? Thank you If one wants to not be pregnant, it is never safe to have intercourse without other protection. In order to use the "rhythm method" which is what you are describing, it is best to have an accurate record of your cycles for the last twelve months. Then based on these one can calculate the least likely times of the cycle to get pregnant. Using these formulae and having very regular cycles as documented on a years menstrual calendar, the pregnancy rate with rhythm is about 25-30%(means 25 to 30 of 100 women who use this method for one year will get pregnant). Without these charts and calculations, the failure rate is 50%. Use of condom, diaphragm, or spermicidal jellies has a failure rate of 6%. The IUD and birth control pills have a failure rate of 0.5%. Norplant and Depo-provera are also about 0.5%. The morning after pill has a failure rate of 1-2%. RDB
-- R.Daniel Braun, MD FACOG FOG
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