Not crazy!
I spent a lot of my early life hearing voices as I was falling asleep. When she was young, my daughter used to say she was visited in her bedroom by a little girl. We would hear her chattering away in a one-sided conversation that could only be genuine! Most people have some latent extra-sensory talent. Sometimes this makes itself known and sometimes it doesn't...
It is stronger in some people than others...
Some people develop their talent and some don't...
I suggest you live with it and accept it. Eventually your stress level/life circumstances will change and though the gift is unlikely to entirely go away you will find the experiences aren't noticed any more. If you want to develop it or know more about it you can do no better than seek out others who share the gift.
You will face scepticism. Always remember that for those who believe in something, whether magic, ghosts, God or santa claus, it will really exist!
For those with closed minds nothing exists...