well they arent 100% but i suppose you should consult your doctor..
no
Yes it is still possible. See a doctor.
if you have been confirmed as pregnant by the doctor - it is still possible in these early stages of pregnancy for tests to come back negative, i would check with the doctor to be sure.
No pregnancy is pregnancy and it doesn't matter if you were on the pill at the time. It will still show positive if you were pregnant.
Yes
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.
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.
If you are four weeks pregnant you will have enough hCH to have a positive pregnancy test.
Yes, but that is a small chance.
No, a period and a negative HPT (used at the appropriate time) indicates no pregnancy.
i know i took two tests and i was pregnant
it is effective to a point..but not always. you can still get pregnant using birth control. its a big preventor of pregnancy but its still possible to get pregnant.