I took a home pregnancy test and was really disappointed to see that it was negative but then when I checked again after 20 minutes, I think I saw a very faint line appear in the result window. What does that mean?

Take a pregnancy test to be sure or go see your doctor

Yes there are two
different types of pregnancy tests. One is a blood test for the hormone HCG
which you would have to do through your doctor. The other is a urine test which
also detects HCG and can be done through your doctor or using a home pregnancy
kit.

Try not to feel overwhelmed at seeing a positive pregnancy result. Whether you are happy or concerned, it's really natural to have many conflicting emotions. The best thing to do is to make an appointment with your physician who will probably do a blood test to confirm the pregnancy and then discuss with you what the next steps are.

Most home
pregnancy tests give a final result within 2 minutes of coming into proper
contact with the urine flow.

Don't worry - if you got a negative result, the chances are that you are not pregnant. Home pregnancy tests are about 97%-98% reliable. But if you are still really worried, go and see your doctor.

Home pregnancy tests are not always 100% reliable and sometimes a woman can get a negative result even though she is pregnant. I would try another test and if that's still negative and your symptoms continue, go to your family doctor.

It's hard to tell you exactly what that means as it could be that you are pregnant but your HCG levels were too low to trigger the line within the time frame but it could also just be a fault in the test. I would wait a couple of days and then try another one.

Home pregnancy tests are actually quite reliable. They work by detecting
the hormone HCG which is found in both urine and blood. If you have a lab blood
test, it will probably detect pregnancy earlier than a home urine test.

That really varies. Some people could get a result on a home pregnancy test within 10-14 days after ovulation but most people need to wait until the first day of a missed period.

For some women home pregnancy test kits do not work. It would be best to visit a doctor and have a blood hCG, pregnancy, test done. There is a danger of ectopic, outside the womb, pregnancy which could cause the pain. It could be something as simple as an infection that's causing your problem but you need to visit a doctor and get it sorted out.