First of all congratulations if you are on the family way.
Now about the home or instant pregnancy tests, as you have been told, if you have a normal and regular period you can expect accurate results within 3 days of missing your period.
But, make sure that the sample you are using is the first urine of the day, that is just immediately when you get up in the morning.
As more days pass by you can get the same result even at later stages of the day.
There are various instant pregnancy tests available in the market. A chemist can provide you with one.
All these kits have the procedure mentioned clearly on them, but still Iam letting you know.
Take a sample of your first urine of the day and with the help of the dropper provided in the kit, put 2-3 drops on the well designed in the tray.As soon as you do this you will see a line appearing.One line shows negative result while two lines means it is positive.
In an other kind of kit you get strips, which you have to insert directly in the sample of your urine.
Though these tests have proved to be reliable but still always consult a doctor for verification. It would add to the happiness and you will get more and more health advices and medications from the doctor.
Hope you are satisfied.