To get a proper result, the HPT is best taken with the early morning sample of urine. You did not say exactly for how long you did not have your periods. If it is a couple of months, then your pregnancy
test should definitely get positive in whatever way you take it. If it is not, it means that you are either not pregnant at all or have a missed abortion
(since you have symptoms of pregnancy). this can be confirmed by a blood test
and a trans-vaginal sonogram. Consult your health care professional for further support. Good luck.