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days befor the sperm actually fertilize the egg ?

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my last periof was june 3rd and ended june 7th i had an oops pn june 15th around 7 p.m of course i went looking for a plan b but all the local pharmacy's were closed so the next day i went to atleast 10 pharmacy's looking for it and they were all out but thankfully my bf found a walgreens that had it around 10 that night i took as soon as he got it ,im just now experiencing some mild cramping did we get it fast enough i took anatomy this year in school and my teacher says it takes about 2 days to get for the sperm to actually fertilize the egg sometimes 3 so should i be okay? i now have that think white discharge that i usually get before my period ? my bf says im worrying to much i havent had any side effects is that ok ?

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replied June 19th, 2012
Sexual Health - Women Answer A36213
Welcome to ehealthforum,
If fertile mucus had been present at time of intercourse, sperms can stay alive for 5-7 days and fertilize the egg upon ovulation. After ovulation, egg has only 24-48 hours to get fertilized. If you have taken the emergency contraceptive within 48-72 hours of the unprotected sexual intercourse, it should work in preventing pregnancy (provided you were not sexually active without protection after taking it). Withdrawal bleeding usually occurs within 5-7 days of taking ECP indicating that it has worked (which may not occur if taken close to period). Since the pills contain high doses of hormones, these can disrupt the normal hormonal and period pattern causing period/bleeding abnormalities and appearance of new symptoms. Wait and watch for your next periods which can be delayed. Look out for development of any other new symptoms if pregnancy is suspected. If pregnancy is suspected, or if you miss your periods, or if you have abnormal periods, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
If pregnancy gets ruled out, and if you are not ready for pregnancy, but intend to remain sexually active, you should consider visiting your gynecologist to get started on suitable regular birth control measures to be protected (after your periods). Be regular with birth control use as instructed. Avoid having unprotected sexual contact. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.

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