Draining Guru

I joined a spiritual org in 2003. There was a strange incident that happened few times in past 4-5- months. I can literally feel that my energy is being drained by someone (I feel it’s done by the Guru) while i asleep. After such incidents when I wake up I feel exhausted, I don’t feel fresh. Energy level will be so low that I can’t even carry out my everyday chores. Would like to know what’s happening and should I discontinue doing all the practices taught by the Guru. I didn’t know where to look for answers, so turned to u. Are these Gurus trust worthy at all?