May 21 is the starting of ur periods rite? U have a chance of getting pregnant, but not 100% since it was 10th day after ur cycle.
Fertile period is from 12-20 days after periods, so wait and watch till ur due date, if u dont get ur periods then do the urine test to confirm.
Hope I have answered ur question,
Answered: Mon, 6 Jun 2011
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