I have a 5 day old batch that I did using Wyeast Activator. If thats what you have you should smack it, let it sit for a few hours at room temperature (you will see it expand) and then pitch it to your cooled wort. Wyeast Propogator is meant to be used with a starter.
Old school or the new, doesnt mean a thing if your heart's not true!
Primary: 04/29 Pomegranate Nectarine Apfelwein, 05/23 Petite Saison
Kegs drinking: AHS Midnight Wheaten Stout 03/18 - 04/14 - 04/28,
Kegs conditioning: 01/29 - 04/29 Cranberry Apfelwein, 04/29-05/23 Petite Saison
RIP: 11/07-11/28-01/29-05/04-11/17 Flanders Brown Ale