You'll get 14 activity added to your potential activity for every activity period that you've posted in. Each activity periods are 14 days long and the next one will begin in tuesday. So you'll have to wait till tuesday to increase your activity by maximum of 14.
You can learn more about activity
here and
here.
Thanks but as I said earlier my activities were increasing every hour until I reached 56.I didn't have to wait 14 days
Hmm let me explain that again. I said
You'll get 14 activity added to your potential activity for every activity period that you've posted in. You've posted in 4 activity periods so 14*4=56 potential activity. Your activity will only increase every hour if you haven't reach your potential activity.
Perhaps it'll be easier to understand if I say
max activity instead of
potential activity (tell me if this helps).