. . . means that you arent pregnant.
No
Yes
No, a period and a negative HPT (used at the appropriate time) indicates no pregnancy.
Most pregnancy tests are 99%
No you can't be pregnant and still have your period. You can have a light bleed but not a period. As for the whole negative test thing, it could be a false negative.
Possibly the pregnancy test is ineffective. Try another one.
Who's pregnancy test? Yours?
You are pregnant
The negative pregnancy test is the defining answer, regarding pregnancy - once your period is a week or so late - if you are pregnant, the hCG will be high enough to be detected.
Unlikely - the bleeding probably was your period
Having your period means you aren't pregnant
Most pregnancy tests are accurate day one of your missed period, if your test is negative retake it in 3 to 7 days.