Although there are more than one symptoms of Pregnancy, the most relied ones could be as follows:

1) A missed or a delayed menstruation cycle is the most reliable symptom of pregnancy.
2) Implantation Bleeding is the earliest symptom of pregnancy. This happens about eight days after the conception resulting in spotting and cramping.
3) Swollen/Tender Breasts is another early symptom that can be seen after 1 or 2 weeks of conception. Many women may notice that their breasts have become tender to the touch or have turned sore.
4) Fatigue or a feeling of tiredness that may begin within the first week of conception is also a early pregnancy symptom.
5) Nausea/Morning Sickness is another well known symptom that may show up after about 2 to 8 weeks after conception.
6) Lower Backaches is another early symptom of pregnancy.
7) Frequent Urination occurs after 6 to 8 weeks of pregnancy and is very common symptom of pregnancy.
8) Darkening of Areolas or the skin around the nipples.
9) Food Cravings for certain kinds of food indicates a presence of pregnancy and can last throughout the period.

Confirming pregnancy
Of course these are the symptoms of pregnancy and the existence of one or more is not definite indication that you might be pregnant. Just the same, if you do not experience these symptoms, it does not mean that you are not pregnant. The best way to confirm is to take a pregnancy test. Many early pregnancy tests are very accurate and can tell you early if you are pregnant or not. If you suspect you are, you should visit your GP and he/she can confirm it and also start your pre-natal care.

When can I do a home pregnancy test?
Pregnancy tests can usually detect hCG 8-11 days after ovulation, thats a couple of days before your period is due. This depends on the sensitivity of the test. It should say on the test when it should be used and how sensitive it is.

How do I use a home pregnancy test?
Read the instructions for you own pregnancy test, because different tests use different instructions. Whatever the individual instructions, all pregnancy tests operate in the same way - they measure the presence of hCG in your body, usually through urine. An indicator will appear if you are pregnant (in some tests a blue line appears if you are pregnant), this again depends on the individual test, so read the instructions carefully.

How soon will I get a result?
The result is available after 2-5 minutes (an eternity).

How accurate are home pregnancy tests?
Most tests are 97% accurate, as long as the directions are followed exactly. However, your test could be negative for a number of reasons
1. You may not be pregnant.
2. If you test too early, there may not be enough hCG for the test to detect.
3. You may be making less amounts of hCG than normal.
If a test comes back negative but you suspect you are pregnant, try another test in a few days. Tests which report positively and are incorrect are rare.