How do I stop a website tweeting for me?

[BluCoolPop]

I'm usually pretty careful with signing into twitter and facebook but now something like a website or app is tweeting for me about Ketone shakes, has anybody any idea about how I can stop this? I've gone into settings and checked what apps have access to my twitter account and the only apps are Mobile Web by Twitter, Twitter for Android by Twitter, Inc, and Twitpic by Twitpic, Inc. I honestly haven't a clue if it's even possible to stop this, and if it is how to go about it,

[Antwan]

It might be Twitter ads that are showing tweets for Ketone shakes. If not, it is one of the apps that you use, eithe Mobile Web or Twitpic. You can contact Twitter to see where these tweets are coming from. Your account might be compromised.