I just finished the bloodline quest and refused to become a vampire and my journal says to go tell isran what happened,but when i talk to isran it doesnt give me that option?

The objective to talk to isran isnt a quest in my journal..it just say to do that at the end of the blood line quest...

When you went back to Fort Dawnguard was it under attack?

no when i talk to isran it doesnt give me the option to tell him bout bloodline quest