Hi, thanks for using healthcare magic
If your period is delayed and there is a history of unprotected intercourse
,then it is possible that you may be pregnant.
tests detect the level of HCG
hormone which is released in pregnancy.
The levels of this hormone rise as the pregnancy progresses.
It is normally detectable by day 11 to 14 after conception. You can consider either waiting a few days before repeating the test or having a blood HCG done at your doctor's office.
The HCG level in the blood can be detected sooner.
I hope this helps