Yes. False negatives are fairly common. Try to test again a week after your first negative test. If this is still negative, go see your doctor for a definite answer.
Yes!
No, a period and a negative HPT (used at the appropriate time) indicates no pregnancy.
no
It is possible to get a false negative on a at home pregnancy test but it is not common. Go to your doctor and have a blood test done.
There is a possibility of pregnancy anytime intercourse takes place.
Yes, it is possible. This could be due to stress, excessive physical activity, or the possibility of pregnancy.
I would go to the doctor for a blood test to be sure, but I don't see why it couldn't be possible. Sometimes there are errors with home pregnancy tests, and sometimes they are incorrect. There is also the possibility that you have started to loose the baby and that is why it came back as negative in the second test, although I would hope that is not the case. Good luck!
Pregnancy tests, especially early-stage home tests, are never 100% reliable.
If the woman has recently had sex and is no longer getting her period and has pregnancy-like symptoms, she should see a doctor to see if she is pregnant. It is definitely a possibility.
Some women do not get a positive pregnancy test will late in their pregnancy , if even. A blood pregnancy test is the best way to go.
Yes it is still possible. See a doctor.
You should see a Doctor, you may have a growth or tumor that needs attention.