HPT Results

Savanah • Placed my son for adoption 5 years ago(single mom)...Miscarried 4 little angels... Finally got our rainbow baby boy whose 10 months old...Trying for another baby or multiples!
When is the best time to take an HPT? In all of my miscarriages I never got a positive test until at least 6 weeks. Is this normal or should I be able to get a positive test earlier? What is considered too early to take a test?