I think these dreams have something to do with being out of control.

I am curious, did you have all of these four dreams within a short time period, or are they just dreams you happened to remember and decided to post about them when you found this message board?

If you find you are having a lot of strange/frightening dreams all of a sudden, it could mean that there is something very important/stressful going on in your life. It might be something that you are trying not to think about, so it is coming out at night when you are sleeping.

Also, bad dreams could be a sign of problems with your physical health.