What do my dreams mean?

i never use to dream much until about 15 days ago after i came back from my holiday now every night i have weird and really disturbing nightmare's. The first one was my mam dad n sister i let this alligator into the house and it killed them, but wen i went to c there body's they looked burnt then my m8s dragged me out clubbing and my cousin tryed to get with me, another 1 was i was trying to save sum-ones life but i had to get out the building b4 in blew up but as i ran out i ran Straight through sharp weirs and i died i felt the blood drain out of my body and my heart was hurting and i woke up with a scratch on my chest it was deep as well. i had one about being in war and me and my family getting stud up in a line and shot, they shot me first i Fell on the flor next to 1 of the men that shot me and as i lifted my head that seemed to be very heavy i bit his leg to stop him hurting my family then he shot me in back of the head and i had that same blood daring feeling of death my head was numb. and i wake up Thrugh the night and wen i go back to sleep thnightmaresrs carry on from were i left off. wouldn'tn normallyly makefussfuss about this but its scering me , i dont wanna fall asleep incase i have anotha one. its puting me on edge i hate beeing alone now to.