How I feel..!!

 I would really love it if someone could respond to me at some stage.  I am a 32 yr old married lady with two children from Australia.  About 2 or so years ago, I started having what I believed were visions.  What happens is that out of the blue, I go into this vision and its always the same vision, same background music, same scary looking man, same scenes (there are about 4 that I know of that repeat every time) and it is scaring the absolute heck out of me.  I went to the doctors about it as I was having dizziness also and so I was given a CT Scan of the brain and nothing was found.  Everything was A - OK but I still keep getting these visions.  They come and go.  I am 15 weeks pregnant and have not had them since I first found out I was pregnant but last night they started in bed and happened all through the night.  I wake up in a deep sweat and my body is absolutely dripping because they frighten me that much.  I just had another one then while I was sitting on the computer and that is when I decided to search and see if anyone else suffers from these frightening visions too. Mine generally last for about 15 seconds and they make me feel sick from fear straight after. The doctor actually thought it could have been epilepsy but the head/brain scan came back fine.  My husband believes it is all hormonal from the pregnancy but as I said, it has been at least two years that I have been experiencing them and I was not pregnant during that time.  Please help, it is really concerning me and I hate feeling so completely helpless and lost when one kicks in.  Kind regards, Kellie.