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Withdrawl method is not so safe, since there are chances of sperms being in pre-cum, its advised to take contraceptive
pill within 72 hours to be effective, since u have taken after 127 hours there are chances of not effective.
Now the only way for u is to wait till ur due date, if u get ur periods then relax, if u dont then do a urine test to confirm pregnancy
, if it shows positive meet a gynecologist before 40 days so that u can take pills for aborting.
Hope I have answered ur question,