Why is Winston in doubt?

[Typicalposter]

Did Winston get caught for a thoughtcrime or face crime? He is constantly referring to the fact that he will get caught and will be vaporized along with others, including Syme. Was he caught for using the prostitute years ago? Why is he in doubt that he too will be vaporized?

[The Atheist]

Did Winston get caught for a thoughtcrime or face crime? He is constantly referring to the fact that he will get caught and will be vaporized along with others, including Syme. Was he caught for using the prostitute years ago? Why is he in doubt that he too will be vaporized?

He was guilty of thoughtcrime, which is the only crime possible in Oceania.

He was never in doubt that he would be caught and vaporised. The prostitute is a red herring in the reasons for his capture. He was guilty of thinking the unthinkable. (To the Party)