Precognition, Perception, Or Coincidence?

This is my first time with any kind of story on any kind of website, but I have so many questions, like everyone, and so little answers. I'm hoping that someone can help me understand...

My story starts here:

I'm not sure when it started, or when I really became aware that it was even happening. I can feel things, think them, and they happen or have happened. I also have very vivid dreams, but that's another story. Its not that I think any particular thought and that's what happens, but more like a random thought will pop into my head. For instance, one day just driving to work my best friends mom popped into my head and I wondered if my friend had talked to her mom recently, that maybe she should call her. An hour later, my friend called and said her mom had been in a motorcycle accident, within the same time frame as my random thought. I'm not close to my friends mom so why did I think of her? Another incidence was when my grandfather passed. No one in my family had talked to him in years (we were pretty estranged from him) and I happened to ask my mom one day if we would even know if he passed away. Three days later, we got the call that he had. Why after 3 years of not seeing him would I randomly think about him and his death?

I do have other incidents that have occurred, nothing grand, just knowing where to be at the right time, and where not to be at the wrong time. And not every thought or feeling has something awful happening after it. But the reason I even post my experiences is because of my most recent feeling. At work one day I suddenly got nauseous and dizzy. It was all I could do to focus on not getting sick or falling down. It lasted maybe three minutes, but seemed longer. Just as suddenly the nausea and dizziness gone. Not long after, I received news that a good friend had been held at gunpoint, brutally attacked, and robbed. Roughly right around the same time. It really shook me up.

My question is really, what is going on? Is it just coincidence that I have thought or felt these things and then something happens? Or is it something more on a psychic level? And if it is something more on a psychic level, how do I use this ability? How do I enhance it?

Thoughts?