Don't waste money buying those expensive digital tests too early. Just buy the basic strip tests and use them 2-3 days after your missed period with early morning urine. That way you save on unnecessary repeat tests and can budget for your first doctor's visit.
Oh, that magical moment! It usually shows positive around the first day of your missed period. I still cry thinking of the day I saw those two beautiful lines, it's such an emotional feeling.
Keep faith and stay calm. If you test a day or two after your missed period, you will get a clear positive if it is God's will. Take good care of your health.
You can test on the day of your missed period, but please be careful if you have any cramping or spotting. For my pregnancy, I had some early issues, so my doctor suggested getting a beta hCG blood test instead of just relying on home kits.