If it was, it sounds like it was straight from the reader to convince you to get the ritual. I assume this was something you had to pay for?
If I were you, I wouldn't go near that person again without some protections in place, including something to reflect any attacks or "persuasion" right back onto them. If you still feel it, and even if you don't, I'd do a divination of your own for yourself, using whatever method you are comfortable with, see if you can pin down what happened and where it was from. It COULD have just been something from the reading, or the reader doesn't really know what they're doing and brought their own shit to the show accidentally, but whatever it was, you'll want to banish it back to where it came from. At the very least, though, run some basic banishing, hex-breaking, and protection for yourself and your space.