I too always wake up at around 3am. I put it down to needing to use the loo
I often wake up but am still half awake, and see weird things: For instance, I once wokeup/half awake and the picture above my bed was spinning around on the wall, I had to get up and take it down. I also woke up to see a man wearing a black suit hovering above my wardrobe. Again, I had to get up to turn on the light to make sure I wasn't going mad.
But there was a time I woke and I knew I was wide awake as was thinking clearly about getting up to use the loo, and there was a green ball of light to the left of me, it moved up and down for a bit then went. That was weird too.
How the above is of any relevance to anything I do not know