soulhunter,
Hi,
If you are blacking out I would say it is not likely to be Reiki. In Reiki one minimizes the use of Personal Energy as much as possible. In other forms of energy work Personal energy is more crucial which means Intention and mindfulness are even more important.
I do not recommend dabbling or ad libbing in energy work. A consistent course of training and practice is very important whether it is Reiki or some other tradition.
Cheers,
RC