Confused on the 10 or 20 guarantee could someone explain :)

Hi so I've played since January and have know of the quarantee five star every 20 and 4 every 10 but I want to know does the count reset if say you get lucky and pull a 5 in ten pulls (as I just did) does the count restart from there or does it continue from the original count and I'll get one in 10 it's a bit confusing lol any help would be greatly appreciated! :)