Nope, it's not just you. Twitter confirmed Thursday that its service is down for many, preventing new messages from being sent and the service from loading.
What they're saying: "We know people are having trouble Tweeting and using Twitter. We’re working to fix this issue as quickly as possible," Twitter said in an e-mail to Axios. "We’ll share more when we have it and Tweet from @TwitterSupport when we can – stay tuned."