The conventional practice here has been you are allowed to bump your own post, but no more than twice per 24 hour period. Some times it's necessary to do this if your post simply gets buried very quickly during high activity periods and it was hardly seen by anyone. It's not that you are being snubbed if you don't get a reply - certain times of the day are exceptionally busy.
It's better to bump your original post than to start multiple threads asking the same question. To bump, just "reply" to your own original post adding a little extra text or comment to fill the 10 character minimum.