I have a spirit following me. It's been following me for a few months now, but the problem is I can't see it. I can sense where it is, I can talk to it through my pendulum, and it likes to do whispers in my room at night. Not to mention every so often I can catch glimpses of it moving around in my room.
Am I just going crazy, or could this possibly be something? And even though it follows me around, will saging my house still have an effect?
Yes, saging your house will have an effect. It will cleanse your home and you of negative energy. If this spirit is negative, then it will leave. If they do not, then they either have attached itself to you, or isn't negative at all. If they haven't harmed you, scared you, or made you uncomfortable in any way, then I think that they just want to be acknowledged instead of causing harm.