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Even if you just swallow them, your digestive system will be able to absorb it, so whether you chew them or swallow them does not make any difference in their effectiveness as long as you take them regularly at scheduled time daily. You are recommended to use additional protection if having intercourse during your first pill pack. Most hormonal contraceptive pills start giving you effective protection after about 3-4 weeks of regular use. Wait and watch for periods/withdrawal bleeding by the time you finish with the placebo pills. If periods/withdrawal bleeding does not occur by the time you finish the pill pack, then visit your doctor/gynecologist for further examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Do not start with the next birth control pill pack if you suspect to be pregnant. Look out for development of any other new symptoms suggestive of early pregnancy. You can also discuss about switching to alternate pills if you are not comfortable with chewing the pill, or if you doubt the efficacy of the pills if you just swallow and not chew them.
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