To find your own posts, there's a "What's New" link in the upper left corner of the forum. If you click on that, you'll see another link for "My Posts". This will display every post you've made on ECF.
The Provari forum may fall under the 15 post requirement that some forums have here. As you've hit that number, give things about 15 more minutes (the cron jobs run at 25 minutes after the hour), and you should be able to see the posts in the Provari forum.