Every tweet is visible to you and others. Please note that twitter is having piling up of tweets within seconds and as you respond to a tweet, it must be some where in the line of 200 to 300 tweets. What you do is- as soon as you respond to a tweet, go to your profile page and click home. All the new tweets at that time will line up and surely your tweet can also be seen between 1 to 50 tweets range, Moreover the followers of you matters. If you have more followers, there are many chances of many tweets appearing in seconds. For me within one minute 200 to 300 tweets appear as new.
I consider myself as the learner everyday