Using pregnancy tests are the surest and quickest way to diagnose pregnancy, even before the onset of pregnancy symptoms.
While there are many types of pregnancy tests available, one thing is definitely similar. Each diagnoses pregnancy from urine. After implantation of the fertilized ovum your body starts producing the pregnancy hormone HCG. The test can be used any time of the day, but the most reliable results will always be when using morning urine. The HCG hormone is most concentrated in the morning urine.