There should be an expiration date stamped on the box or on the wrapper of the pregnancy test. If your test should have a wrapper and does not, do not use it. A general rule of thumb is if you are not sure you should use it, don't. Buy a new one.
the date on the box
depends, the cheapest one 24 hrs..
2 weeks
2 weeks after.
If you leave it on the counter it shouldn't take to long maybe 1 min or 2 min. It won't take long
2 minutes
11 days
You should take a pregnancy test shortly after your missed period. That is when a home pregnancy test is most effective. Although I have heard you can do a blood test at the doctor as soon as 2 weeks before your missed period.
You don't, take one now.
Fourteen days after intercourse.
You can usually get results the next day
Most women should wait at least a few days after sex before taking a pregnancy test.
You should wait for at least two weeks for then only can you do a pregnancy test that will show a result.
Wait a week and then retake the test.