I dont know what it is with pregnancy and vivid dreams. recently I have had tow really vivid dreams where I have died, and both times at the moment of death I have woken up, most recent was being shot in the head, and I actaully was aware of everything going red and yellow, and a hot fuzzy pressure to my head as my eys shot oven and I realised I was in bed and it was a dream. Its so disturbing, but just try to remember its just a dream, and not an indication of whats going to happen, although dreams can be interpreted its more likely to be based on your fear of not feeling your baby move much, and that is what your fearing coming out in your dream. Perhaos if this lack of movement thing is really worrying you, look at getting a foetal dopler, you can hire them or pick them up pretty cheap on ebay, then you can use it to reasure yourself when ever you need to.