It normally takes a tank 6-8 weeks to cycle.
Being fully cycled means it has a large enough population of ammonia consuming basteria to eat all the ammonia the fish put out.
This does not normally happen in 2 weeks.
During the cycle period, how were you feeding the bacterial population you were trying to cultivate?
Using straight bottles ammonia? pieces of shrimp? Sacrificial fish?
i just used the quick start stuff from Walmart