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You can still be pregnant, but keep in mind that pregnancy is not the only reason your period might skip.

I would wait another week before testing (10-5-09), that would make your period 2 weeks...

Sorry about your loss.
Wait at least 2 weeks from the day you had sex. I would stick to a blood test because after a miscarriage you might get a false result from a urine test.
Good luck and...

I'd wait one week, if by the end of the first week in October, you still have not gotten your period, than test, because your period could just be late.
In any case, you can get free pregnancy...

It means the test did not work properly. You need to retest. If the line on the "other" window does not come up, it means the test is no good.