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For urine pregnancy
test to become positive it takes at least 2 Weeks after conceiving.
Last day of your menses, if it is within 10 days from your starting date of period then you are unlikely to become pregnant, because it is within the safe period.
The bleeding you experienced must have been caused by the ipill
that you ingested.
In all probability you are unlikely to be pregnant.
Wait for one month and if you do not get your regular period, then repeat the pregnancy test with early morning sample.