Hacked? Or What?

I think my passwords got hacked. Posts are disappearing, some changed, weird stuff, too weird, don't know what is up. Am switching computers again, to one fully protected and clean. I don't open attachments, have McAffee, must have clicked a bad website or photo or video or something. Got to change all passwords and maybe I won't be posting for a little while til that is done. Anyhow, all messed up, technologically speaking.