nekoman,
Hi,
How were you attuned? Have you ever given a full Reiki treatment? Find a teaching reiki Master and ask if you can do full Reiki treatment for him\her. Only by doing Reiki with someone else will you be able to 'test' yourself. Hands-on Reiki with others is the single best way to open and enhance your connnection the the greater flow of energy.
Cheers,
RC