the tool won't help you there. Also I never had problem to be pregnant, except that I play a futa breeder, on the other hand
if pregnancy is OFF in your setting, it's instant birth for everyone including yourself, if you set pregnancy ON then everyone give
birth in 3 or 4 days, I forgot exactly the number of days you need to sleep in order to see the baby. Also when you have sex in
wild, it's a surprise pregnancy, you won't know that you are pregnant (a message pop on the screen when you are pregnant at home, but not in the wild)
and again the ON and OFF setting will affect the wild pregnancy, I think you cannot become pregnant if it's OFF