Alright so I know you guys probably have heard of a discussion like this, and have experienced this problem but, I was entering The Bannered Mare and all of the sudden Uthgerd started swinging her greatsword at me so I was forced to kill her.
Next with 0 bounty I went to Dragonsreach because I figured I'd become the Dragonborn. Right when I entered I started walking towards Irileth, and she, Jarl Balgruuf, Proventus, and whtever his name is (Balgruuf's brother), and the two Whiterun Guards next to the Jarl attacked me, I ran outside and became Undetected, so I go back in and they start attacking me again, this time I run outside and they follow... then every guard in Whiterun joins in. I was forced to flee the city. How exactly do you stop this?