Feeling drained from dowsing

[JagJ]

I was doing some pendulum dowsing to ask a few questions about the nature of my relationship with my boyfreidn who has been rather distant lately, but won't explain the reason why. We are probably breaking up, but I need to have a few questions answered.

When tuning into him, and trying to get a sense of him and answers to my questions, after a few minutes I felt really tired, so I took a nap. I was really drained. I am wondering if this is because I was doing an intuitive session--I have dowsed many times before--or could it have been negative energy coming from him or the situation that caused me to get drained? It seemed to come on suddenly.

I tend to be empathic. All I know is that I felt dizzy, and that I was dowsing by holding the end of the chain near my "third eye" in concentration and focus. The pendulum was circuling clockwise which I think is good, if it is assessing one's chakras or for chakra balancing.

Anyway, has anyone experienced this before or does anyone have any ideas as to why I would have felt so dizzy and drained?

Thanks!