You'll get 14 more activity after you make a post in the next activity period, which will begin at 16 August.
You can only get 14 activity for each activity period that you posted in. Dates of activity periods are listed
here. This activity period just began yesterday and you've already posted in it.
So I'll have to wait even longer just to becom a Jr. Member?
I was under the impression it was not only the activity that decided your position