Okay guys, I just got mindfucked. SERIOUSLY mindfucked.
I stopped going on with the main quest like many of you suggested, and kept going with the Dark Brotherhood. I got a bounty from a murder and went to jail. Because the doors were only hard locks, I used my Hard Lock spell and escaped from prison. My bounty is super high now. I decided to start being a vampire hunter while killing guards if they attack, and everything was going fine. UNTIL just then. I walked into the vampire slayers and a guard came in who I killed. Everyone was scared and started attacking me. Some guy turned into a Daedra and I shat myself. Then Count Hassildorf(?) walked in and attacked me, resulting in me contract Vampiric disease. Now I'm a vampire and some unkillable superhumans are trying to kill me.
What the fuck can I do?