What's the "trigger"?

It has been calm for a long time, but now I have had a "visitor" here again.

A week ago I began reading about UFO stuff again and before I went to bed I thought about astral travelling. Maybe I was a bit bored, because I said to myself that I would be fun if I could "make a trip" during the night.

I fell asleep and I had so many vivid dreams! In one of them I met an older man and suddenly I got that unpleasant feeling of burrowing fingers in my back. I woke up immediately!

The feeling of paralysis combined with that poking in my back and waist - it has happend to me so many times. Sometimes I am paralysed and everything is just black. Other times I have seen a human beeing just before it happens. I have also had strange huge insects (like praying mantis) jumping on my back while asleep. But I haven't had those experiences for several moths. Now suddenly it started all over again. It's almost like someone (from another dimension) grabs me. But as soon as I wake up everything is gone.

A couple of days later, just before Easter, I did a huge housecleaning. When it was done I noticed a scratch mark on my finger - a typical paranormal scratch mark. 

Since 2008 I have got several scratch marks while doing larger housecleaning and using my vacuum cleaner. Obviously "something" doesn't like me running around and cleaning every corner of the apartment - or "something" just doesn't like the sound of the vacuum cleaner... 

Anyone else who have experienced this? An invisible "guest" that hates house cleaning?

I am sorry for my bad english, but I do my best ;-)