After you miss ur periods.. try a week to 10 days later.. sometime it doesn’t show positive immediately after a week but after 15 days you get confirmation

Just after 5- 6days of missed period,, one can check HPT..

<span style="color:#3B5998;"><b> @616d5a27c1b4770013bcb718 </b></span> how early can a pregnancy be detected thru an HPT?

Here u go - http://app.babychakra.com/feedpost/20342

<span style="color:#3B5998;"><b> @616d5a27c1b4770013bcb718 </b></span> has written a detailed post on this. Let me pull out the link for u.