Hi ya'll i got a bug on my skyrim.
Ive joined the dark brotherhood and i have done the first contracts (quests) Nazir gave me and after that i didn't get anymore quests, i asked everybody in the guild and they gave nothing

Please help me

Strange, did you talk to astrid?

After you complete all three contracts returning to the sanctuary should start a quest. Either that or you talk to Astrid after turning them in. You killed all three, right?