what is happening with my twitter account?

Hello all,
Please help me since I am not proficient on twitter ,
So someone sent me a direct message with a link to get a lot of followers , a link that looks like this twitterfollowers.mobi , so I kind of clicked on it and signed up with twitter, but the thing is I keep getting a lot of messages with bunch of websites that want you to subscribe and get followers. Now please tell me how to get rid of it, I really don't want that many followers , and this is not the issue alone, but I am following some professional people, like professors, coworkers and they keep on getting those messages with links from my twitter account, and I keep deleting the messages but I get a lot more from people I don't know!
Please help me or guide me how to get rid of those links whether received or sent messages !
Thank you , and I am sorry I typed my question very quickly via my phone.
Regards

Marissa2014-05-02T06:44:23Z

The link you went to is spam. You basically gave all of your twitter information away to a hacker. Said hacker now has your username and password and they log onto your twitter and send out those messages. Just change your password and don't use spam links anymore.