Same with me for the diseases. Didn't know until I walked outside during the day and it said my skin was burning.. that I realized I had turned into a vampire. Being a vampire is horrible too, when everyone sees you they try to kill you instantly. Fast traveled to dragonreach and got gang raped by guards and neighbours
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On the main quest did anyone get stuck when trying to talk to Esbern?? There is text and he doesn't speak and doesn't open the door...