How many coins do you have? 160? With such a small amount of coins, it may take several months.
When pos calculator was worked it showed me something like 80% chance in 10 days and 95%+ in 14 days chance for 155 coins.
Did you use pos calculator before? It showed that first 2 days you can not get stack for any big amount of coins.
the pos calculator has a default difficulty set to 0.06 but the current difficulty is about 1.0
