How To Get Through The Night Mares?

I am 18 years old and my whole life I have had nightmares off and on. They have always been extremely real and vivid, and I can remember them as far back as 5 years old. They never bothered me of effected my life, they never really scared me that much either. It was just something normal to me. In the past few months, it has escelated to a big problem in my life. I have very long dreams, that never make any real sense to me or anybody else. I remember them like they are a day in my life, I can tell them in excessive detail. Recently I have dreams that I cannot really remember, but I wake up shaking and feeling like I m going to be sick. I can t really walk and have to lay there for about 30 minutes before I can get up and do normal daily things. Sometimes I remember them, and they are so real I have to make sure that it didn t really happen. I can t sleep anymore. It s now effecting my life. It upsets me greatly.