If you had a very faint positive test then it is possible you are pregnant, if I was you I would do another test, if it is positive contact your doctor and let them know what happened. Good luck
wait for a couple of days more for the HPT.
if you still do not get period for another 5-7 days and your HPT comes negative, you can go for the Beta test, ( blood test) which will determine if you are pregnant or not