As long as you are regularly uploading content to your channel, your content stream will refresh once every 24 hours. So if you've created some content, it should take < 24 hours to appear in your profiles content stream. A word of advice though, if your channel has been inactive for a while, your content stream will not update as quickly. Conversely, however, the more actively you upload content, the quicker your stream will refresh.
I hope this helps.