Urine home pregnancy tests are about 99% accurate. Blood tests are even more accurate than this.
If you get a positive result, you are pregnant. This is true no matter how faint the line, color, or sign is. If you get a positive result, you may want to call your doctor to talk about what comes next.
In very rare cases, you can have a false-positive result. This means you're not pregnant but the test says you are. You could have a false-positive result if blood or protein is present in your urine.
If your cycles are regular around 28 days,14th day is around ovulation.You should be having intercourse daily and can do pregnancy test (of preferably early morning urine sample) after 2 to 3 days of missing your periods.
If negative and no periods can repeat it after a week.
Hope you are convinced. Best wishes