I've read countless stories about people knowing when things are going to happen, but with me it's mostly bad things. When I was 11 I was thinking about a friend of my mom's, and a couple of hours later she got a call that he'd died. I didn't have many experiences like that until I started college, now I get them often. For example, I dreamt about my grandmother with a rotten arm, that same day she fell and broke her arm. Earlier this year, I was thinking about my grandfather when I heard the phone ring, he was being admitted at the hospital. And two days ago, my mother jokingly said my aunt would die if she heard a joke we'd told, and for some reason that felt odd, as if it was really going to happen, today we got a call she'd died.
And there's many more that have happened, sometimes they come in dreams and other times, like this last one they're more like are a feeling or a thought. And I know if this has anything to do with but in the past couple of years, I've felt watched at night. Like someone is in my room, at one point I felt the thing grab me by the neck. I also experience sleep paralysis, constantly two to three times a week, as well as a constant high pitched ringing in the ears that I was told could be tinnitus, but my hearing is fine. All of it, the "premonitions", sleep paralysis and feelings of being watched has gotten a lot stronger in the past couple of years. It's a crazy mix of things, and I don't really know what to do anymore but I'm scared almost all the time.
As for the being watched part... Thats something else all-together. I would definitely try to cleanse the house and room you are living in. You are picking up on a lot, some times we pick up on too much. I keep crystals in my room as well. But not just any crystal.
Keep us posted.